@advocatux thanks for fixing the picture. We have self signed certificate and sometimes it produces some issues.
About the cable - it is broken, and the screen gets weird artefacts, until you get the right pressure on the cable itself. I use two fingers to find the position and then I hold it like that. And then I use tablet very carefully with the other hand.
I spoke to BQ, but they don't sell/ship parts. The only way is to send it to Spain and they fix it. But I don't want to pay for the post and the repair. I would like to fix it myself, as it is not under the warranty anymore. Maybe I can buy this kind of cable somewhere?