PayPal Pro charging customers twice

I am using OpenCart 2.3.0.2 and this is happening most of the time. Can anyone help?

When using the debug mode from PayPal Pro, what are the results being logged (excluding confidential information!) ?

Thanks for offering help.

I found the following statements in my /system/storage/logs/error.log

2018-08-31 1:25:30 - PayPal Express debug (Call data): {"METHOD":"SetExpressCheckout","MAXAMT":134.96,"RETURNURL":"https:\/\/fsreloading.com\/index.php?route=extension\/payment\/pp_express\/checkoutReturn","CANCELURL":"https:\/\/fsreloading.com\/index.php?route=checkout\/checkout","REQCONFIRMSHIPPING":0,"NOSHIPPING":0,"LOCALECODE":"EN","LANDINGPAGE":"Login","HDRIMG":"https:\/\/fsreloading.com\/image\/cache\/catalog\/reloadingLogo-750x90.gif","PAYFLOWCOLOR":"ffffff","CHANNELTYPE":"Merchant","ALLOWNOTE":"1","PAYMENTREQUEST_0_SHIPTONAME":"Edmar Souza","PAYMENTREQUEST_0_SHIPTOSTREET":"rua santa rita 221 madruga","PAYMENTREQUEST_0_SHIPTOSTREET2":"","PAYMENTREQUEST_0_SHIPTOCITY":"VASSOURAS","PAYMENTREQUEST_0_SHIPTOSTATE":"RJ","PAYMENTREQUEST_0_SHIPTOZIP":"27700-000","PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE":"BR","PAYMENTREQUEST_0_SHIPPINGAMT":"","PAYMENTREQUEST_0_CURRENCYCODE":"USD","PAYMENTREQUEST_0_PAYMENTACTION":"Sale","L_PAYMENTREQUEST_0_DESC0":"","L_PAYMENTREQUEST_0_NAME0":"Hornady G2 1500 Electronic Scale","L_PAYMENTREQUEST_0_NUMBER0":"H050106","L_PAYMENTREQUEST_0_AMT0":29.99,"L_PAYMENTREQUEST_0_QTY0":"3","L_PAYMENTREQUEST_0_ITEMURL0":"http:\/\/fsreloading.com\/hornady-g2-1500-electronic-scale.html","L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0":"0.45","L_PAYMENTREQUEST_0_ITEMWEIGHTUNIT0":"lb","L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0":"7.00000000","L_PAYMENTREQUEST_0_ITEMLENGTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0":"6.75000000","L_PAYMENTREQUEST_0_ITEMWIDTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0":"1.50000000","L_PAYMENTREQUEST_0_ITEMHEIGHTUNIT0":"in","L_PAYMENTREQUEST_0_NUMBER1":"shipping","L_PAYMENTREQUEST_0_NAME1":"Direct Link International","L_PAYMENTREQUEST_0_AMT1":23.21,"L_PAYMENTREQUEST_0_QTY1":1,"PAYMENTREQUEST_0_ITEMAMT":"113.18","PAYMENTREQUEST_0_AMT":"113.18"}
2018-08-31 1:25:31 - PayPal Express debug (Result): "TOKEN=EC%2d6JJ59560YH333140V&TIMESTAMP=2018%2d08%2d31T01%3a25%3a31Z&CORRELATIONID=25957c0da8f7d&ACK=Success&VERSION=109%2e0&BUILD=48666477"
2018-08-31 1:26:06 - PayPal Express debug (Call data): {"METHOD":"GetExpressCheckoutDetails","TOKEN":"EC-6JJ59560YH333140V"}
2018-08-31 1:26:07 - PayPal Express debug (Result): "TOKEN=EC%2d6JJ59560YH333140V&BILLINGAGREEMENTACCEPTEDSTATUS=0&CHECKOUTSTATUS=PaymentActionNotInitiated&TIMESTAMP=2018%2d08%2d31T01%3a26%3a07Z&CORRELATIONID=6b91a76c1bb93&ACK=Success&VERSION=109%2e0&BUILD=48666477&EMAIL=edmarbrandenburger%40gmail%2ecom&PAYERID=U8N4G96HLR2KY&PAYERSTATUS=verified&FIRSTNAME=edmar&LASTNAME=brandenburger%20souza&COUNTRYCODE=BR&TAXIDTYPE=BR_CPF&TAXID=09224562752&SHIPTONAME=Edmar%20souza&SHIPTOSTREET=rua%20santa%20rita%20%20221&SHIPTOSTREET2=madruga&SHIPTOCITY=Vassouras&SHIPTOSTATE=RJ&SHIPTOZIP=27700%2d000&SHIPTOCOUNTRYCODE=BR&SHIPTOCOUNTRYNAME=Brazil&ADDRESSSTATUS=Confirmed&CURRENCYCODE=USD&AMT=113%2e18&ITEMAMT=113%2e18&SHIPPINGAMT=0%2e00&HANDLINGAMT=0%2e00&TAXAMT=0%2e00&INSURANCEAMT=0%2e00&SHIPDISCAMT=0%2e00&INSURANCEOPTIONOFFERED=false&L_NAME0=Hornady%20G2%201500%20Electronic%20Scale&L_NAME1=Direct%20Link%20International&L_NUMBER0=H050106&L_NUMBER1=shipping&L_QTY0=3&L_QTY1=1&L_TAXAMT0=0%2e00&L_TAXAMT1=0%2e00&L_AMT0=29%2e99&L_AMT1=23%2e21&L_ITEMWEIGHTVALUE0=0%2e45&L_ITEMWEIGHTUNIT0=lb&L_ITEMLENGTHVALUE0=7%2e0&L_ITEMLENGTHUNIT0=in&L_ITEMWIDTHVALUE0=6%2e75&L_ITEMWIDTHUNIT0=in&L_ITEMHEIGHTVALUE0=1%2e5&L_ITEMHEIGHTUNIT0=in&PAYMENTREQUEST_0_CURRENCYCODE=USD&PAYMENTREQUEST_0_AMT=113%2e18&PAYMENTREQUEST_0_ITEMAMT=113%2e18&PAYMENTREQUEST_0_SHIPPINGAMT=0%2e00&PAYMENTREQUEST_0_HANDLINGAMT=0%2e00&PAYMENTREQUEST_0_TAXAMT=0%2e00&PAYMENTREQUEST_0_INSURANCEAMT=0%2e00&PAYMENTREQUEST_0_SHIPDISCAMT=0%2e00&PAYMENTREQUEST_0_SELLERPAYPALACCOUNTID=pp%40fsreloading%2ecom&PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false&PAYMENTREQUEST_0_SHIPTONAME=Edmar%20souza&PAYMENTREQUEST_0_SHIPTOSTREET=rua%20santa%20rita%20%20221&PAYMENTREQUEST_0_SHIPTOSTREET2=madruga&PAYMENTREQUEST_0_SHIPTOCITY=Vassouras&PAYMENTREQUEST_0_SHIPTOSTATE=RJ&PAYMENTREQUEST_0_SHIPTOZIP=27700%2d000&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=BR&PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME=Brazil&PAYMENTREQUEST_0_ADDRESSSTATUS=Confirmed&PAYMENTREQUEST_0_ADDRESSNORMALIZATIONSTATUS=UserPreferred&L_PAYMENTREQUEST_0_NAME0=Hornady%20G2%201500%20Electronic%20Scale&L_PAYMENTREQUEST_0_NAME1=Direct%20Link%20International&L_PAYMENTREQUEST_0_NUMBER0=H050106&L_PAYMENTREQUEST_0_NUMBER1=shipping&L_PAYMENTREQUEST_0_QTY0=3&L_PAYMENTREQUEST_0_QTY1=1&L_PAYMENTREQUEST_0_TAXAMT0=0%2e00&L_PAYMENTREQUEST_0_TAXAMT1=0%2e00&L_PAYMENTREQUEST_0_AMT0=29%2e99&L_PAYMENTREQUEST_0_AMT1=23%2e21&L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0=1%2e5&L_PAYMENTREQUEST_0_ITEMWEIGHTUNIT0=in&L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0=0%2e45&L_PAYMENTREQUEST_0_ITEMLENGTHUNIT0=lb&L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0=7%2e0&L_PAYMENTREQUEST_0_ITEMWIDTHUNIT0=in&L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0=6%2e75&L_PAYMENTREQUEST_0_ITEMHEIGHTUNIT0=in&PAYMENTREQUESTINFO_0_ERRORCODE=0"
2018-08-31 1:26:07 - PayPal Express debug (Call data): {"TOKEN":"EC-6JJ59560YH333140V","PAYERID":"U8N4G96HLR2KY","METHOD":"DoExpressCheckoutPayment","PAYMENTREQUEST_0_NOTIFYURL":"https:\/\/fsreloading.com\/index.php?route=extension\/payment\/pp_express\/ipn","RETURNFMFDETAILS":1,"PAYMENTREQUEST_0_SHIPPINGAMT":"","PAYMENTREQUEST_0_CURRENCYCODE":"USD","PAYMENTREQUEST_0_PAYMENTACTION":"Sale","L_PAYMENTREQUEST_0_DESC0":"","L_PAYMENTREQUEST_0_NAME0":"Hornady G2 1500 Electronic Scale","L_PAYMENTREQUEST_0_NUMBER0":"H050106","L_PAYMENTREQUEST_0_AMT0":29.99,"L_PAYMENTREQUEST_0_QTY0":"3","L_PAYMENTREQUEST_0_ITEMURL0":"http:\/\/fsreloading.com\/hornady-g2-1500-electronic-scale.html","L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0":"0.45","L_PAYMENTREQUEST_0_ITEMWEIGHTUNIT0":"lb","L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0":"7.00000000","L_PAYMENTREQUEST_0_ITEMLENGTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0":"6.75000000","L_PAYMENTREQUEST_0_ITEMWIDTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0":"1.50000000","L_PAYMENTREQUEST_0_ITEMHEIGHTUNIT0":"in","L_PAYMENTREQUEST_0_NUMBER1":"shipping","L_PAYMENTREQUEST_0_NAME1":"Direct Link International","L_PAYMENTREQUEST_0_AMT1":23.21,"L_PAYMENTREQUEST_0_QTY1":1,"PAYMENTREQUEST_0_ITEMAMT":"113.18","PAYMENTREQUEST_0_AMT":"113.18"}
2018-08-31 1:26:09 - PayPal Express debug (Result): "TOKEN=EC%2d6JJ59560YH333140V&SUCCESSPAGEREDIRECTREQUESTED=false&TIMESTAMP=2018%2d08%2d31T01%3a26%3a09Z&CORRELATIONID=906f594a0cc1&ACK=Success&VERSION=109%2e0&BUILD=48666477&INSURANCEOPTIONSELECTED=false&SHIPPINGOPTIONISDEFAULT=false&PAYMENTINFO_0_TRANSACTIONID=5VF619525C340491H&PAYMENTINFO_0_TRANSACTIONTYPE=cart&PAYMENTINFO_0_PAYMENTTYPE=instant&PAYMENTINFO_0_ORDERTIME=2018%2d08%2d31T01%3a26%3a08Z&PAYMENTINFO_0_AMT=113%2e18&PAYMENTINFO_0_FEEAMT=5%2e28&PAYMENTINFO_0_TAXAMT=0%2e00&PAYMENTINFO_0_CURRENCYCODE=USD&PAYMENTINFO_0_PAYMENTSTATUS=Completed&PAYMENTINFO_0_PENDINGREASON=None&PAYMENTINFO_0_REASONCODE=None&PAYMENTINFO_0_PROTECTIONELIGIBILITY=Eligible&PAYMENTINFO_0_PROTECTIONELIGIBILITYTYPE=ItemNotReceivedEligible%2cUnauthorizedPaymentEligible&PAYMENTINFO_0_SELLERPAYPALACCOUNTID=pp%40fsreloading%2ecom&PAYMENTINFO_0_SECUREMERCHANTACCOUNTID=T63D5U375Y7BC&PAYMENTINFO_0_ERRORCODE=0&PAYMENTINFO_0_ACK=Success"
2018-08-31 1:26:16 - PayPal Express debug (IPN data): {"request":"cmd=_notify-validate&mc_gross=113.18&protection_eligibility=Eligible&address_status=confirmed&item_number1=H050106&tax=0.00&item_number2=shipping&payer_id=U8N4G96HLR2KY&address_street=rua+santa+rita++221%0D%0Amadruga&payment_date=18%3A26%3A08+Aug+30%2C+2018+PDT&payment_status=Completed&charset=windows-1252&address_zip=27700-000&mc_shipping=0.00&mc_handling=0.00&first_name=edmar&mc_fee=5.28&address_country_code=BR&address_name=Edmar+souza&notify_version=3.9&custom=&payer_status=verified&business=pp%40fsreloading.com&address_country=Brazil&num_cart_items=2&address_city=Vassouras&verify_sign=AHe0NU6qeAh.nYee6Rg4uc0FOuqCAvixcnrijyMuhDZ4eLgfuJ9IgD.q&payer_email=edmarbrandenburger%40gmail.com&tax1=0.00&tax2=0.00&txn_id=5VF619525C340491H&payment_type=instant&last_name=brandenburger+souza&address_state=RJ&item_name1=Hornady+G2+1500+Electronic+Scale&receiver_email=pp%40fsreloading.com&item_name2=Direct+Link+International&payment_fee=5.28&shipping_discount=0.00&quantity1=3&insurance_amount=0.00&quantity2=1&receiver_id=T63D5U375Y7BC&txn_type=cart&discount=0.00&mc_gross_1=89.97&mc_currency=USD&mc_gross_2=23.21&residence_country=BR&shipping_method=Default&transaction_subject=&payment_gross=113.18&ipn_track_id=906f594a0cc1","response":"VERIFIED"}
2018-08-31 1:26:16 - PayPal Express debug (IPN data): "Transaction does not exist"
2018-08-31 1:26:16 - PayPal Express debug (IPN data): "Parent transaction not found"
2018-08-31 1:26:16 - PayPal Express debug (IPN data): "cart"
2018-08-31 1:26:32 - PayPal Express debug (Call data): {"METHOD":"GetExpressCheckoutDetails","TOKEN":"EC-6JJ59560YH333140V"}
2018-08-31 1:26:32 - PayPal Express debug (Result): "TOKEN=EC%2d6JJ59560YH333140V&BILLINGAGREEMENTACCEPTEDSTATUS=0&CHECKOUTSTATUS=PaymentActionCompleted&TIMESTAMP=2018%2d08%2d31T01%3a26%3a32Z&CORRELATIONID=4cfc3bd579d2&ACK=Success&VERSION=109%2e0&BUILD=48666477&EMAIL=edmarbrandenburger%40gmail%2ecom&PAYERID=U8N4G96HLR2KY&PAYERSTATUS=verified&FIRSTNAME=edmar&LASTNAME=brandenburger%20souza&COUNTRYCODE=BR&TAXIDTYPE=BR_CPF&TAXID=09224562752&SHIPTONAME=Edmar%20souza&SHIPTOSTREET=rua%20santa%20rita%20%20221&SHIPTOSTREET2=madruga&SHIPTOCITY=Vassouras&SHIPTOSTATE=RJ&SHIPTOZIP=27700%2d000&SHIPTOCOUNTRYCODE=BR&SHIPTOCOUNTRYNAME=Brazil&ADDRESSSTATUS=Confirmed&CURRENCYCODE=USD&AMT=113%2e18&ITEMAMT=113%2e18&SHIPPINGAMT=0%2e00&HANDLINGAMT=0%2e00&TAXAMT=0%2e00&NOTIFYURL=https%3a%2f%2ffsreloading%2ecom%2findex%2ephp%3froute%3dextension%2fpayment%2fpp_express%2fipn&INSURANCEAMT=0%2e00&SHIPDISCAMT=0%2e00&TRANSACTIONID=5VF619525C340491H&INSURANCEOPTIONOFFERED=false&L_NAME0=Hornady%20G2%201500%20Electronic%20Scale&L_NAME1=Direct%20Link%20International&L_NUMBER0=H050106&L_NUMBER1=shipping&L_QTY0=3&L_QTY1=1&L_TAXAMT0=0%2e00&L_TAXAMT1=0%2e00&L_AMT0=29%2e99&L_AMT1=23%2e21&L_ITEMWEIGHTVALUE0=0%2e45&L_ITEMWEIGHTUNIT0=lb&L_ITEMLENGTHVALUE0=7%2e0&L_ITEMLENGTHUNIT0=in&L_ITEMWIDTHVALUE0=6%2e75&L_ITEMWIDTHUNIT0=in&L_ITEMHEIGHTVALUE0=1%2e5&L_ITEMHEIGHTUNIT0=in&PAYMENTREQUEST_0_CURRENCYCODE=USD&PAYMENTREQUEST_0_AMT=113%2e18&PAYMENTREQUEST_0_ITEMAMT=113%2e18&PAYMENTREQUEST_0_SHIPPINGAMT=0%2e00&PAYMENTREQUEST_0_HANDLINGAMT=0%2e00&PAYMENTREQUEST_0_TAXAMT=0%2e00&PAYMENTREQUEST_0_NOTIFYURL=https%3a%2f%2ffsreloading%2ecom%2findex%2ephp%3froute%3dextension%2fpayment%2fpp_express%2fipn&PAYMENTREQUEST_0_INSURANCEAMT=0%2e00&PAYMENTREQUEST_0_SHIPDISCAMT=0%2e00&PAYMENTREQUEST_0_TRANSACTIONID=5VF619525C340491H&PAYMENTREQUEST_0_SELLERPAYPALACCOUNTID=pp%40fsreloading%2ecom&PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false&PAYMENTREQUEST_0_SOFTDESCRIPTOR=PAYPAL%20%2aFSRELOADING&PAYMENTREQUEST_0_SHIPTONAME=Edmar%20souza&PAYMENTREQUEST_0_SHIPTOSTREET=rua%20santa%20rita%20%20221&PAYMENTREQUEST_0_SHIPTOSTREET2=madruga&PAYMENTREQUEST_0_SHIPTOCITY=Vassouras&PAYMENTREQUEST_0_SHIPTOSTATE=RJ&PAYMENTREQUEST_0_SHIPTOZIP=27700%2d000&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=BR&PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME=Brazil&PAYMENTREQUEST_0_ADDRESSSTATUS=Confirmed&PAYMENTREQUEST_0_ADDRESSNORMALIZATIONSTATUS=UserPreferred&L_PAYMENTREQUEST_0_NAME0=Hornady%20G2%201500%20Electronic%20Scale&L_PAYMENTREQUEST_0_NAME1=Direct%20Link%20International&L_PAYMENTREQUEST_0_NUMBER0=H050106&L_PAYMENTREQUEST_0_NUMBER1=shipping&L_PAYMENTREQUEST_0_QTY0=3&L_PAYMENTREQUEST_0_QTY1=1&L_PAYMENTREQUEST_0_TAXAMT0=0%2e00&L_PAYMENTREQUEST_0_TAXAMT1=0%2e00&L_PAYMENTREQUEST_0_AMT0=29%2e99&L_PAYMENTREQUEST_0_AMT1=23%2e21&L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0=1%2e5&L_PAYMENTREQUEST_0_ITEMWEIGHTUNIT0=in&L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0=0%2e45&L_PAYMENTREQUEST_0_ITEMLENGTHUNIT0=lb&L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0=7%2e0&L_PAYMENTREQUEST_0_ITEMWIDTHUNIT0=in&L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0=6%2e75&L_PAYMENTREQUEST_0_ITEMHEIGHTUNIT0=in&PAYMENTREQUESTINFO_0_TRANSACTIONID=5VF619525C340491H&PAYMENTREQUESTINFO_0_ERRORCODE=0"
2018-08-31 1:26:32 - PayPal Express debug (Call data): {"TOKEN":"EC-6JJ59560YH333140V","PAYERID":"U8N4G96HLR2KY","METHOD":"DoExpressCheckoutPayment","PAYMENTREQUEST_0_NOTIFYURL":"https:\/\/fsreloading.com\/index.php?route=extension\/payment\/pp_express\/ipn","RETURNFMFDETAILS":1,"PAYMENTREQUEST_0_SHIPPINGAMT":"","PAYMENTREQUEST_0_CURRENCYCODE":"USD","PAYMENTREQUEST_0_PAYMENTACTION":"Sale","L_PAYMENTREQUEST_0_DESC0":"","L_PAYMENTREQUEST_0_NAME0":"Hornady G2 1500 Electronic Scale","L_PAYMENTREQUEST_0_NUMBER0":"H050106","L_PAYMENTREQUEST_0_AMT0":29.99,"L_PAYMENTREQUEST_0_QTY0":"3","L_PAYMENTREQUEST_0_ITEMURL0":"http:\/\/fsreloading.com\/hornady-g2-1500-electronic-scale.html","L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0":"0.45","L_PAYMENTREQUEST_0_ITEMWEIGHTUNIT0":"lb","L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0":"7.00000000","L_PAYMENTREQUEST_0_ITEMLENGTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0":"6.75000000","L_PAYMENTREQUEST_0_ITEMWIDTHUNIT0":"in","L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0":"1.50000000","L_PAYMENTREQUEST_0_ITEMHEIGHTUNIT0":"in","L_PAYMENTREQUEST_0_NUMBER1":"shipping","L_PAYMENTREQUEST_0_NAME1":"Direct Link International","L_PAYMENTREQUEST_0_AMT1":23.21,"L_PAYMENTREQUEST_0_QTY1":1,"PAYMENTREQUEST_0_ITEMAMT":"113.18","PAYMENTREQUEST_0_AMT":"113.18"}
2018-08-31 1:26:34 - PayPal Express debug (Result): "TOKEN=EC%2d6JJ59560YH333140V&SUCCESSPAGEREDIRECTREQUESTED=false&TIMESTAMP=2018%2d08%2d31T01%3a26%3a33Z&CORRELATIONID=2ba464c6eb688&ACK=SuccessWithWarning&VERSION=109%2e0&BUILD=48666477&L_ERRORCODE0=11607&L_SHORTMESSAGE0=Duplicate%20Request&L_LONGMESSAGE0=A%20successful%20transaction%20has%20already%20been%20completed%20for%20this%20token%2e&L_SEVERITYCODE0=Warning&INSURANCEOPTIONSELECTED=false&SHIPPINGOPTIONISDEFAULT=false&PAYMENTINFO_0_TRANSACTIONID=5VF619525C340491H&PAYMENTINFO_0_TRANSACTIONTYPE=cart&PAYMENTINFO_0_PAYMENTTYPE=instant&PAYMENTINFO_0_ORDERTIME=2018%2d08%2d31T01%3a26%3a08Z&PAYMENTINFO_0_AMT=113%2e18&PAYMENTINFO_0_FEEAMT=5%2e28&PAYMENTINFO_0_TAXAMT=0%2e00&PAYMENTINFO_0_CURRENCYCODE=USD&PAYMENTINFO_0_PAYMENTSTATUS=Completed&PAYMENTINFO_0_PENDINGREASON=None&PAYMENTINFO_0_REASONCODE=None&PAYMENTINFO_0_PROTECTIONELIGIBILITY=Eligible&PAYMENTINFO_0_PROTECTIONELIGIBILITYTYPE=ItemNotReceivedEligible%2cUnauthorizedPaymentEligible&PAYMENTINFO_0_SELLERPAYPALACCOUNTID=pp%40fsreloading%2ecom&PAYMENTINFO_0_SECUREMERCHANTACCOUNTID=T63D5U375Y7BC&PAYMENTINFO_0_ERRORCODE=0&PAYMENTINFO_0_ACK=Success"

The issue is here:

L_SHORTMESSAGE0=Duplicate%20Request

You are encountering duplicated request with the same request.

Source: https://developer.paypal.com/docs/class ... ors/#11607

I attached a text file which might be easier for you to view.

After you click on the Confirm button, you see a colored message saying "Please wait". It disappears and then nothing happens. Most customers click on the Confirm Button order a second time generating a second charge. It seems to take the second time and you are taken to the Order Confirmation page.

One customer ordered the same product again 3 times before giving up.

See this solution: https://github.com/opencart/opencart/pu ... 7b40e19790 . However, since you are using OC v2.3.0.2 release, you'd need to tweak the output a bit.

I looked at the first link.

I did not see any FAQ on the second link.

Fixed the locations on the previous post.

I do not understand what you are asking me to do since I do not have this file in OpenCart 2.3:

upload/catalog/view/theme/default/template/extension/payment/pp_express.twig

Instead of .twig, it would be .tpl for that file. As for the:
line instructed, for v2x releases, it would be:
This should resolved the issue.

The file
/home/octest/public_html/catalog/view/theme/default/template/extension/payment/pp_express.tpl

looks like

<div class="buttons">
<div class="pull-right">
<a href="<?php echo $continue; ?>" class="btn btn-primary" id="button-confirm" data-loading-text="<?php echo $text_loading; ?>"><?php echo $button_continue; ?></a>
</div>
</div>
<script type="text/javascript"><!--
$('#button-confirm').on('click', function() {
$('#button-confirm').button('loading');
});
//--></script>

This issue now seem to have been fixed on OC v3.1.0.0a release since yesterday. It was identified as a bug prior. Until then, unless a tweak fix gets published, patience will have to be an option until the stable release of the next release gets released.

You are saying I need to wait for a fix for OpenCart 2.3.0.2?