Capsule in endless loop trying to close an app

Just bought a new capsule and added a few apps to it, one of which was tea tv, clicked on the app and now the capsule is in a loop. Can’t click anything, to work, after a few mins it comes up with close tea tv or wait check box, either one starts the freeze and repeat cycle
I have turned the capsule off, I have run the battery flat, I have tried everything I can fathom.
I can’t find anything on the net for a hard reset, I’m hoping someone here knows.
Have only watched 10 mins of Netflix as s test before this happened …
not happy at the moment, any help would be good.

From what I’ve “quickly” seen on Google, teatv ain’t a great streamer anyways, and it’s very common for it to freeze.

Maybe that you’ll need to look at a less dodgy streamer, and go for something better?