Any idea what might be the problem here? Users don't seem to want to change groups.
Usergroups effected = 2, registered users group which donating members are all part of.
Donated usergroup id = 9, which corresponds to the id of the usergroup i have created for donating users to be moved to... But once payment has been sent, and an admin has confirmed it they remain in usergroup 2.
No one else seems to be reporting this so i'm guessing it must be something i've missed. I'd be greatful for any suggestions though.