ADS-B site disappeard

I have four feeders (MKE,ZPH,RFD, and CHA I do not see CHA on MY ADS-B has anyone else had this problem ? I know it has not been on in a long time but it in not in my ads-b would it just drop off.

Feeder sites are automatically deleted from Flight Aware after 30 days of inactivity.

Thanks looks like i will have a other site drop off dont know whats going on it will be a few weeks before I can fly down and fix it.

You have a feeder near KCHA? I live here (and oddly work at the airport) if you want some help with it. (also I have one too)