Recently, I setup a user account upgrade that would promote a user to a new user group. After purchasing the upgrade, I set the display priority for the new group to be incredibly high so that the new user group is the "dominant" one. After each purchase, users aren't being automatically added to this user group. In fact, I get an e-mail saying it was successful... but it doesn't show in the "active user upgrades" section that they purchased it. Any idea why this may not be working properly?