Hello again,
By the way I’m loving Tidal on Volumio 
Re beta, I appreciate that it’s in a teething stage and that its not all going to be perfect first time, but I don’t think it’s far away in respect of Tidal.
I have encountered a functionality glitch linked to the options button to the right side of each album/track bar, however i think the problem only seems to occur in the ‘My Music’ section.
When adding an album to the queue in My Music>Albums>A-Z, the request is acknowledged with the message bubble (top right) but the command doesn’t actually initiate i.e. does not add to queue. However, if you open the album to see the track list, the ‘the add to queue’ command does initiate for an individual track, so you can currently queue the album track by track but not album by album!
Obviously this is only an issue if, like me, you want to assemble a queue of albums for an evenings (nights) listening!!
I’ll keep you posted on any further findings over the next few days