Square Terminal receipt printer door won't latch (fix)
Frustrating as it is, I had the printer door pop of our Square Terminal in the middle of an event. After ordering another terminal, I wanted to figure out why this was happening. Come to find out, the Receipt Printer Door has an issue where the plastic holes that hook into the terminal have a very thin sheet of plastic in them. If the door pops off suddenly, those tabs will break off. You can reinstall the printer door, however, it won't latch correctly. The solution is very simple. Buy another door.
