Great game but has a problem – VOEZ Review

I personally like this game a lot it’s a challenge and makes you want to beat each level. Though you can really only play a selection of songs without the use of money. But my main concern right now is that every time I exit out of the game and want to play again, I will try logging in with my Facebook account but when I do it doesn’t log in. I have to delete the app and redownload it. I hope you can fix this :) I don’t know if it’s just my device.
Review by ITS EITHER GOOD OR BAD on VOEZ.