My Spotify profile started working again on my 2019 XC40 (USA).
Over the past month I've tried everything including reinstalling and deregistering the device from my Spotify settings page. I do not see any relationship between the steps I took and it working again.
So UK support told me to take it to the dealer. I thought I was being fobbed off and that they wouldn't be able to do anything but they have fixed it. They didn't tell me how to fix it I'm afraid so I can roads that on but my advice is please contact your local dealership. They sorted mine for free