Doesn't run on boot, manual opening needed

[Stooovie]

mac2mqtt 1.3.1 running on 11.5.2 doesn't launch on boot even with KeepAlive and RunAtLoad enabled in /Library/LaunchDaemons/com.bessarabov.mac2mqtt.plist. It doesn't run unless i manually run launchctl load /Library/LaunchDaemons/com.bessarabov.mac2mqtt.plist

Console shows Aug 31 10:32:24 Mac com.apple.xpc.launchd[1] (com.bessarabov.mac2mqtt[8205]): Service exited with abnormal code: 2 every minute.

What else can I check? Thanks.

[zellers]

Have you checked that the quarantine flag is no longer set on the file ?

to check:
xattr /Users/USERNAME/mac2mqtt/mac2mqtt

to clear:
sudo xattr -r -d com.apple.quarantine /Users/USERNAME/mac2mqtt/mac2mqtt