Do you have the shop's email or a contact number? Our LQS owners were still taking text and phone calls. They even delivered my machine to me personally when it needed a calibration. These are desperate times you know especially when we have machine issues.
OK, I think you have a control panel that you can scroll through settings. Scroll through the pages in the preferences. Look at each setting to make sure it is on the default (setting is in black box).
Are you using the start/stop or a foot pedal?
Have you changed the needle position with the L/R shift button? Check that is in the default. This should be either 0.00 or a 3.50 on that tab.