If your game won't open, crashes, or you are getting an "insufficient Permissions" banner just before payment, this is likely an issue with your Quest's firmware needing an update. Try to update the firmware by going to Settings>About from the Oculus Universal menu, and if there's no update, restart the headset and see if it kicks one off for you.
You need to be on version 27.xx or higher.
Insufficient Permissions banner
Then scroll down to About