I'm having the exact same issue as #202. Copy-pasta:

This is only on Android. iOS works fine.

It seems the issue is related to the default callback: http://localhost/facebook. Facebook doesn't allow http callbacks anymore, so we're kind of stuck here. I tried all possible combinations of settings, even tried https://localhost/facebook just for the funz, but that didn't work either.

I'm investigating and can probably send a PR fix, but any pointers would be very helpful. Thanks!