Touch the right side of the screen and swipe left. That will take you back to the main screen. From memory that is the only screen that doesn’t have a back button.
Limit switches only work during homing. If you jog past the limit its going to crash. Good thing is this usually doesn’t cause any issues, just skipped steps on the stepper motors. It will sound like grinding. Doesn’t hurt the motors. But you will lose machine position/square and will have to home the machine again after that happens. That is one big feature with V1 machines, you can crash without breaking expensive stuff.