We plug our Nextbase front and rear dashcam into the 12v socket, you can always purchase a 2 socket adaptor from Halford if that helps. It cam in very useful in June when a woman bumped into the rear of our vehicle when we were stationary at red traffic light, simply sent dashcam video recording to Motability insurance company.
It’s more the issue of getting hit when parked. My dashcam is plugged into the 12v socket, but that offers no protection when the vehicles not running.
It’s always surprised me that Mota won’t allow a hardwired dashcam, especially one professionally fitted.