Why does Groove play my music out of order?

I do know that you can move your music onto the one drive and play it on your xbox without having a groove music pass. but I as well cannot get my console to play background music even using the groove app. if anyone has some ideas or knows why, please let
me know.

why can't the Xbox s app work in continuum mode for windows phone? The app is grayed out and does not go into an desktop version of the app. Why does the Xbox app not work but Instagram, edge, photos, Groove music, and other apps work?

I have done all those before anyone comment anything.

When you click a app, you get prompt for a update of that app. Before the update I had no problem including groove.

So with groove music. When I uninstall the app. Installed the groove music the background music ( clicking the app from the guide button worked) closed out the app, clicked the groove music app you get a (what's new in groove) then when you click the app
from the guide button which just stops working.

When I mention the background music does not work. <-- it means I go to iheartradio select music go to a game and the music stops.

I won't do a factory reset. As I know it won't work. So does anyone have that issue? As have you even tried.

I use USB thumb drive to connect to Series console and capable to play music via Music Player app, this is another music app. Since I have Groove app already installed, still cannot navigate my local music from external thumb.

I assume that Groove is capable to play music without the need of external drive and still playing in background while doing multitask on console.

Unfortunately, although Music Player app has capable to play music, it requires that thumb drive must be connected to console and no way to transfer local music to internal drive at all. Plus the app must be active, doing multitask on console will result in stopping music.

The question, is there a way to use Groove to play music for Series console in my end? If not due to discontinued, what's the point of Groove's availability in my end that yet I still cannot play music?

pandora is not available in the UK also why are we being charged for this in the UK only way we can listen to music is to pay for it with groove music, and I have tried that simple background music app and it does not work and its not simple either