Usually the UniFi dome APs propagate their signal in a kinda bubble shape up and out. I think he should be OK unless he’s on a top floor.
UniFi has an app called WiFiMan that’s easy to use for checking signal strength.
UniFi has an app called WiFiMan that’s easy to use for checking signal strength.
I had the same complained and would not put my AC in such close proximity to metal sheets.
It would also be an easy fix to just turn it around and put the AP on the bottom after rotating the metal frame