nyaa.si

[IPV6Goblin 0]

I've tried multiple country exits, none work. Is nyaa.si blocked from all AirVPN endpoints?

Note: the nyaa.iss.one mirror won't work for me since the RSS function doesn't work.

[OpenSourcerer 1441]

It's the AirVPN endpoints that are restricted by nyaa.si. AirVPN doesn't restrict anything besides port 25, as explained in the specs.
In any case, consult the route checker to find a working server.