Exactly, that's the problem. If someone clicks PayPal Express to check out, it takes them to PayPal, where they can log in, see their order and click "Pay Now" at PayPal. The "Pay Now" button is supposed to bring them back to my site correct? It does, but it gets a page that says "Whoops. Your session has time out". So the problem seems to be with the return URL from PayPal back to my website.

Under IPN settings at PayPal the notification URL is now: https://cl58.justhost.com/~goldnug1/...in_handler.php

I am using a shared SSL, does that look right to you?

On PayPal Website Payment Preferences the Return URL is now: https://cl58.justhost.com/~goldnug1/...eckout_process

Does that look right?

Thanks for your help!