HomePod not playing music from iTunes collection when asked

Hello to all fellow HomePod Music Players!

I have been not able to ask Siri to play songs and/or albums on request from my iTunes collection (not Apple Music Pay Monthly Subscription as I do not have one).

I would say "Siri, play Song Title by Artist" and Siri would reply "Now playing Song Title by Artist"....

Then recently this would not happen anymore.

I would say "Siri, play Song Title by Artist" BUT Siri would then start to reply "Now playing Song Title by Artist... Sorry there seemed to be a problem with Apple Music" ......

I have disconnected the HomePod/restarted it/reinstalled/renamed it, etc as per the guidance BUT it is still it is not working.....

Any ideas anyone ????

Thanks !