Are you feeding Radarbox with same station number for feed from Pi and feed from Windows?
Before first release of Radarbox's RPi feeder in 2017, I used to feed them with DVB-T plugged into Windows Desktop and running ANRB windows software, which detected DVB-T as microADSB. The station Number was EXTSHA000184. That feed was intermittent, as I used to shutdown Desktop when not in use to save on electricity bill.
When I installed Radarbox's Pi feeder, I automstically got a brand new Station number EXTRPI000008, using the same email address. This runs 24/7/365.
Now whenever I start ANRB Windows software to view its map using data from RPi from port 32088, it starts feeding the original station EXTSHA000184.
I dont mind this duplicate feed, as I am NOT running ANRB windows software 24/7/365. I run it only for short periods occassionally when I want to view its map.
Also, due to different station numbers, the AirNav servers treat these two feeds as independent feeds, so no complication at servers.