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Go to settings and activate the app to run in background.
Like for it to be active always.

I've already done that, but it still doesn't work properly.

I dunno again

I think my phone it's the problem.

Are you sure?
Or maybe you are not doing it right 🤔

It's not the only app that does that. When I'm listening to music on Spotify, it suddenly closes itself and music stops and I don't know why.

Oh.
Now I think it is the phone.
Try and clear cache.