[ringleader]

Originally Posted by Benjamin-P

My paypal account accepts payments automatically so the memer will gain it's new udergroup directly after payment. This only works when you do NOT use a coupon code. When you USE a coupon code... you pay, you return to website and you have not been upgraded to the new usergroup.

That's not this hack doing that.
This only modifies the cost before it even goes to the payment processor, and has nothing to do with the callbacks, etc.

You won't change subscriptions in vbulletin if you are an undeletable user, however.
Are you set in your includes/config file as undeletable?

Unless this is happening to others?
Mine upgrades for several users, both with and without coupons.
I'm using the payPal sandbox for testing, not the live paypal server.
Still, I doubt it has anything to do with this.