Module will not process Payments. Redirects back to the shipping part of the cart after payment details are given. If they choose express, they get to PayPal and then when they click "Continue" to the screen where the payment is made, it redirects back to the shipping module.
???
All Certs, SSL, Keys, etc are in place and correct.
I apologize if this has been asked before, just didn't have time to read 173 pages of posts.
Any help is appreciated.