Unable to download Spotify on 255 Music

Hello, when trying to download Spotify to my new 255 Music, I get the error "to get the latest version of this app, you must update your Forerunner 255 Music in Garmin Express".

I have already updated it to the latest firmware version 15.19 (both via the Connect phone app and Garmin Express on PC).

How can I solve this, when the device is already fully updated? Thanks.