Does anyone have a solution? I have the same problem, but on XDK. It's on the play store and I'm using the correct account in a closed beta.
Edit: I've been searching around for hours and found some advice about using an account different from your developer console account. Still not working for me, but might for someone else.
Edit2: I'm an idiot. I allowed access to alpha testers but missed allowing it for beta testers.