I bought the game a while ago, play it through early access until promoted to major general, stop playing after the account was wiped during official release and started playing again until i promoted to brigadier general. And suddenly got kicked of official server because steam flagged me as pirate.

Is there anything that i can do?

The official servers are Steam only for most of then. Not all yet but will happen sooner or later.

you have to launch rwr through steam