Having the same issue, It doesnt recognise my pass which ive just put on, but it recognises it on my xbox one and win 10 pc.
Also having issues with playback with some songs with a red circle on the track, but if you persist in trying to play the track it usually plays. Keeps updating the tracks aswell, i.e. looking for music on the phone. The other issue I have is it keeps logging me out or I have to keep logging into my account from the phone.