By default all users are charged to play the arcade, I'll be adding a new usergroup setting for vbBux / vbPlaza so that certain usergroups can play for free anyways.
This hack will modify the permission variables to GIVE the arcade permissions if they have purchased Arcade Access. If its not working properly, I'd need to access your Admin CP with Can Administer Plugins to try and track down the issue. It's possible there's a bug that doesnt affect all v3 Arcade Owners as its working for me using the above steps at
www.vbplaza.com.
-CMX