Tamagotchi P's stuck on start screen

Hi everyone,

So I got this tamgotchi P's. Screen is stuck on wait screen.

Not a single button press works.

Only the reset button works and brings me back to this screen.

I tried the A-C-A-B-C diagnostic after reset. But yeah no response.

Any advise?

More pictures here: https://www.reddit.com/r/AskElectronics/comments/l2nrud/tamagotchi_ps_bought_broken_because_i_needed_the/

EDIT: I got it to go into diagnostic mode  couldn't get past: 4:14 in this video:  link (not my video)

So I pressed reset again. But I can't get into the diagnostic mode anymore >_<.

But this does confirm that the buttons seem to do something.

Also it says sound ok, but there is no sound coming from the device at all not even on reset.

It get's stuck here: https://imgur.com/SAuu69

You can press whatever button you want once on that screen but nothing >_<

EDIT: ok got into diagnostic again. But realyl no clue how to complete or fix this thing >_<

I've never found it like that. I'm sorry I don't know how I can help you.