For anyone reading this doing same - you need to fix the ports. FR24 pi image outputs to port 30003. adsb is looking for 30005 and thus fails to find the existing feed
edit it in /etc/default/adsbexchange to align them
No we don't need to fix the ports, we recommend installing a standalone decoder.
Data going through fr24feed is likely not to work for MLAT.
Anyhow that port 30003 is unreliable as fr24feed at least used to crash with multiple connections to it.
In a similar spirit: FR24 should fix their installs and ports.
30003 is SBS data? Don't change the ADSBx data port. FR24 feder client disables 30005 beast port to make it hard for people to feed other sites.
Install a separate decoder like readsb and drop that FR24 mind control. Then set FR24 craptastic client to read from the decoder if you insist on feeding FR24 ...
For anyone reading this doing same - you need to fix the ports. FR24 pi image outputs to port 30003. adsb is looking for 30005 and thus fails to find the existing feed
edit it in /etc/default/adsbexchange to align them