Your laptop glass cracked?

The glass on my laptop has cracked open on the corner and covers the whole screen. When I close and open it, more and more cracks are formed. And I wonder what to do The model is called Trekstor Primebook U13B-PO and I bought it 1.5 years ago at Media Markt. Who should I contact and do I or the guarantee have to pay it?

First contact Mediamarkt.

I turned to MediaMarkt and they say that the damage is not covered by the guarantee. So that I caused the damage, but that's not true the hinge put pressure on the display and cracked it. The next day it hit the whole glass.

Then I would steam it up again. If that doesn't work, contact the manufacturer directly.