How to get service for a Price's alarm system?

The transformer is typically plugged into a standard electrical outlet near the control panel. It might be hidden behind furniture or in a nearby closet. Any chance you can find it? A system reset for the control panel might also do the trick, some steps on how to do that for different panel types are at https://www.telus.com/en/support/article/smarthome-security-devices-factory-reset