Screen issue with new Onyx Boox Poke 3

Hello everybody.

I bought a Poke 3 and it arrived last Friday. I really like it and have everything working as I want.

However, when I picked it up this morning I noticed that the screen is not working properly, making it unusable.

It's difficult to describe, so here's a video.

https://streamable.com/wlsjor

Any ideas? It doesn't seem to be software caused, a restart didn't fix it. Neither did having it plugged in for hours.

Thanks in advance.