UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support Subscription Issue

I have had subscriptions set up and the payment part to PayPal works. What seems to not work for me is the automation part as I have to go back in and manually activate. What could be the issue as appears others using this feature are not having this issue?

Thanks in advance - Geoff

I am assuming it has something to do with not having a return URL that is correct. What am I suppose to have PayPal as a return URL?

Right now I am using the base url for my ubb install:

http://myurl.com/forums/

Also I keep getting this error but may be an issue with me using as the return url: http://myurl.com/forums/

File not found: scripts/sub_thanks.inc.php

I don't find this file in that directory. What do I need to do?

For the missing file it was scheduled to be added in ubb7.6.
https://www.ubbcentral.com/forums/ubbthreads.php/ubb/showflat/Number/248216/



Also I don't understand the url part.
Paypal uses a email address that must be verified.