Its' true the Amazon app had a bug in its first incarnation, but that's supposed to be fixed and multiple M11 users have reported it working, but I can't vouch for it.Is Amazon Music working on the M11 with anyone? And what did you do to make that happen?
In my case, after installing and opening the app I very briefly see the log in screen before it is replaced by the message that my Chrome is not up to date, though I have the latest version.
So: no Amazon Music. Is this true? Or am I an exception? Is the app working with any of you on the M11?
I have no Tidal either (it keeps showing the revolving circle, clearly looking for something it can't find). But Spotify and Qobuz both work.
It shouldn't be such a hassle to have music apps running on a music player...
The Tidal app also never had any big problems like you describe in my use. Are you running current M11 firmware? Usual tips apply (reboot, maybe even reset he device).
Both tidal and amazon should work.