when you flip the device over you can remove the bottom, just gently lift it straight up.

first remove all screws marked in yellow. put them in a bag or box, so you don't lose them.

to fix the display issue, you won't need to remove the whole PCB!

Remove the screws marked in orange and put them in a bag or box

the issue with the displays is caused by the main PCB lowering slightly when you hit the pads. They display is fixed too tightly to the front panel.

Lift the pcb straight off the frontpanel.