Spotify won't sync with Toyota

[Nikki_P]

Hi,
I have a galaxy s6 and a toyota Avalon. For the last two months the spotify app will not sync with my car. The car display is frozen on a song that isn't playing or hasn't played in days. Sometimes I lose remote control access in the steering wheel and have to open the app by phone to change the song. Sometimes the app just closes on its own ans wont reboot. Is anyone else experiencing this? Any ideas on how to fix it? Thanks.