Fenix 5+ cannot adjust spotify volume ? so it is so high im getting deaf. i cannot use it only reason i moved up from 5 to 5+ :-(

Well i think i found a workaround using my Jaybird vista im always running with only one side in ear, tried using both then i could adjust volume and then remove from one ear. 

It is possible and works well for my airpod. Within Spotify app select Menu via middle left button, then search for the speaker symbol via left middle and left down button und confirm via top right button. Then you can select the volume by middle and down left button.