Well, number purchases do work when you top up with credit first! :) The problem amounts to the app realizing you don't have any credit but not showing an error message. This is the top issue I'm working to fix.

FYI, pairing PhoneCard with Google Voice can require a few tries. I've had issues intermittently where Google Voice wouldn't ring for the verification call, and even then it didn't always forward to PhoneCard like it should. Then again, Google Voice often causes me to miss calls.

If anyone else has problems crop up, please email me at [email protected].