Paypal always pointed fingers to AT&T.
My hosting provider always daid, no IPs were blocked.
Today I sent an email to AT&T and in less than 2 hours they replyed back.
The anwser was that they were not blocking any IP.
So what the hell...
I decided to try blueandbell's solution
I set up all the changes exept Payment Data Tranfer (PDT) = On (copy Identity Token and paste in OpenCart Paypal configuration area) because my OpenCart Standard Paypal module does not have this option.blueandbell wrote:I finally solved this problem on my install of 1.5.4 tonight following these instructions. If anyone else is still struggling maybe worth a look....
https://sites.google.com/a/kevronent.co ... l-standard
I set the options for two different paypal account.
One for my opencart website and one for an other site that is oscommerce.
And gess what
Both received payment, email confirmation of orders, all issues solved.
Paypal changed something for sure.
Thanks blueandbell for your post. It saved me and a friend