"Please Wait!" - Authorize.net Checkout Problem

I got a huge problem with the checkout from my website. When I am trying to checkout any product ( I have one-page checkout ) .. everything is going very well until Step6 - Confirm Order ( where is the CC info required ) .

From there my problem begging ... no body can checkout , an error with "Please Wait!" is appearing and it may stay like that for hours ..

I tried to reinstall it , I checked everything (the Authorize.net API details) + I have SSL so I made sure everything in /admin is very good setup.

Anyone dealing with that before of me ? Thank you a lot everyone for your time !

I'm having the exact same problem, I just get "Please Wait" when a payment is submitted but nothing happens. In the console I see get https://myurl/index.php?route_aim/send 404 not found. This just happend out of the blue, the site just stopped accepting payments November 2015 and I haven't been able to figure out what's causing it. I've tried restoring the site and contacting Authorize.net to see if there's any deprecated settings but nothing has worked.

Anyone come across a solution for this?

If the checkout is hanging at "Please Wait", then it's usually an error that is occurring during the order confirmation process, and not within the payment extension. Take a look at your System > Error Log, and look for errors related to order.php (indicating a mod you've installed is causing an error during order confirmation), mail.php (indicating incorrect mail settings), or the payment method files (indicating an error within the extension). You might try uninstalling any mods that affect the front-end, to make sure they aren't affecting the order confirm function.

If you can't find anything in there, you might consider switching to a different payment processor. Both Stripe and Braintree offer competitive pricing, and have great features. I have extensions for both if you decide to do that:

• Stripe Payment Gateway
• Braintree Payment Gateway

Given the URL:
https://myurl/index.php?route_aim/send

You better edit:
catalog/view/theme/YOURTHEME/template/payment/authorizenet_aim.tpl

and make sure that at the bottom inside AJAX function the URL line is exactly like this with a comma at the end:
url: 'index.php?route=payment/authorizenet_aim/send',

I hope it solves your issue.

I had a similar problem where, after submitting "confirm order" it didn't redirect to the success page, but the payment was collected, the order created, etc. I solved the problem! My mail settings for the site were incorrect. Once the correct smtp settings were specified, it worked.