I do see your panel being on firmware version 4.2.1. Could you update the panel to the latest version 4.5.2 to rule out any software issues?
To do this, you will need to do this in increments. You will have to do this by first updating to 4.3.0 > 4.4.2 > 4.5.2
Instructions to perform each update are under each firmware release information in the link below.
Next, you are having issues with your panel tamper as well. This is a small switch on the inside of the wall that is pressed down when installed properly.
If you remove the panel from the wall, does the screen still have the issue? You can remove the panel from the wall by loosening the screw under the panel and then pulling the bottom of the panel away from the wall towards you.
Make sure the back plate is not flexing and is sitting flushed on the wall. Sometimes over tightening the screws on the back plate can cause it to flex.