Touch sometimes not working after screen replacement

Hello.

Just replaced my screen and when I try to unlock it, touch not working so I need to press power button couple times and then it starts working. Once unlocked, it's working fine.

I'm thinking the problem is related to proximiter sensor.

This is ideal camera frame placement. But mine isn't aligned well with the hole, like for 1-2mm vertical shift. Probably bad screen copy. I wonder if it's the issue?

Also, there is little optical thing inserted in that camera frame, maybe I should glue it to the screen too?

Anyway, if you think the problem is in misalignmnent, can I cut screen coverings so I can enlarge camera hole?