After I assembled everything I checked if everything worked and it did except for the LED notification. When I got the new screen I noticed it looks a bit diffrent from the old one.
The new one has a visible circle where the LED should be (1st attachment) while the old didn't have it. (2nd attachement)
I dissassembled everything to check if I missed something but everything was connected.
I did notice that on the old frame there is a bit of rubber (3rd attachement) which I didn't replace since it was glued in pretty hard and I would damage it if I tugged any harder. I would be really surprised if that was the reason for the LED not working.