A tenant added a blow-up pool in the backyard

[Mike Adams]

One of the neighboring tenants filed a complaint whereas one tenant added a blow up pool in the backyard and he cannot sometimes cannot access the back unit with his truck. Out lease doesn't mention blow-up pools, so I am not sure how to deescalate the situation here. These two tenants seems to always get on each others nerves. One filed a complaint that the other one is using the back office for entertainment, and it was that he had a party. So, he then came back and went after her stating that "maybe I should file a complaint and contact the authorities because I cannot always drive to my back unit because there's a blowup pool there along with her kid's bikes all over the place.

Any suggestions on how to deescalate the situation here? The kicker is that one of the tenants is a property manager too. He's the one who's contacting us on issues from this other tenant. Good news is he and his family are on a month to month lease; where as the other tenant isn't. The bad news is his rent is four times the other guy's rent who's on a yearly lease. Plus, still cannot file for eviction due to moratorium. Rather find a way where both can work together and live peacefully.