Lack of aircraft/traffic certain airports

My hub airport is KPBI. It is basically a ghost town with the exception of two or three GA aircraft. In the world screen you see traffic, but after the sim loads they’re gone. I have on live traffic. I can tell from the online live departure/arrivals that there is plenty of real traffic.

Where are your traffic density settings at?

70%. But that is not the issue since i have traffic at other airports.

It’s not your settings, but I can’t offer any suggestions other than entering a Zendesk report.
I thought I’d see if I could replicate the issue, and yup, just two GA over by the tower, that’s it.
I don’t even know if density is adjustable in live traffic, it is greyed out when selected.