Quote Originally Posted by gold View Post
Exactly, that's the problem.
Yes, I understand the symptoms of the problem.
Quote Originally Posted by gold View Post
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?
Correct.
Quote Originally Posted by gold View Post
It does, but it gets a page that says "Whoops. Your session has time out".
Right. Not supposed to do that.
Quote Originally Posted by gold View Post
So the problem seems to be with the return URL from PayPal back to my website.
No, it's not got anything to do with the URL ... or it wouldn't be coming back to your site at all.

Quote Originally Posted by gold View Post
Under IPN settings at PayPal the notification URL is now: 'https://cl58.justhost.com/~goldnug1/ipn_main_handler.php'

I am using a shared SSL, does that look right to you?
Yes, that's fine.

Quote Originally Posted by gold View Post
On PayPal Website Payment Preferences the Return URL is now: 'https://cl58.justhost.com/~goldnug1/index.php?main_page=checkout_process'

Does that look right?
Yes