I had put a decent chunk of time (for me) into a character, over a few years. I had a lot of NX too. I don't know if Royals deletes characters for having an account with low activity. I think my IGN was Ether, or Terrowin. I got a new computer so I wanted to start up again, sorry if this is the wrong place to ask this.
No worries, mistakes happen! For anyone else who stumbles across this post, we never delete anyone's characters for low activity.