Underground parking

Hello people, have unfortunately found no subforum. So, have a problem with my landlord (no private apartment). Who or they would like to have to leave my registered car from the underground garage. In the rental contract there is also nothing of which a car without license plates is not allowed o.ä. ,or what do you mean? Cite: *** The rental item may only serve for own purposes of the tenant and only for the understatement of the motor vehicles, not for storage purposes. *** Now what do you mean??? I I mean, like they want a car, whether it’s on or off, that’s not in it!