Tarragona is under controlled airspace, so you probably appeared on the local Aeroscope as there's an airport nearby. The ways of being busted are basically this:
You were naive enough to put your operator ID on the Fly App, so the drone was...
For RID to work properly, you need a dedicated receiver.
The app works on Android, but it's slow to get the package and only gets the every now and then, even with the drone flying at a few meters. Despite that, I've been able to pick my M3 at...
The Mavic 4 is about to be released, around April at most, it will basically replace the Mavic 3, else, you can go for a Mini 4.
The best image quality on foldable drones comes from the 4/3 of the M3, nothing else come close. The M3E with the...