Spotify works fine on my Huawei P20 Android phone. When I try and cast to Google Home from my mobile it says "Connecting" but the song never plays and keeps playing on my phone. The song playing on the Google Home is from a playlist I listened to a few days ago.

If I open the Web Player in Chrome on a laptop it is stuck on a single song from that same old playlist. If I try and open a new playlist on the Web Player, the song playing doesn't change from the old one. I cannot play through that playlist - none of the buttons move the song on.

I've tried deleting cookies, different laptops, signing out etc etc. My account is Premium For Family, laptop Windows 10 Pro.