Working with OpenCart 220.127.116.11
In the Square Payment extension settings Square OAuth Redirect URL (which is greyed out/uneditable) is http:// not https://
When this is applied into Square's OAuth Redirect URL setting it is rejected because it is not https://
One thing that might be the problem is I get a Warning: SSL is not enabled on your admin panel. Please enable it to finish your configuration.
Even though I have enabled System->Settings->[store]->server->Use SSL option and changed http to https in both config.php But I can't figure this part out either.
Thanks in advance,