Usernames & Core membership

I really LOVE DA but I wish I didnt need core membership to change my username. My "friend" put in "AlaskaTheFangirl" as my username and I told him not to because Im non-binary. But the jerk did it anyway. I cant get core membership and I dont want people using female pronouns for me and then when I correct them they say that my username says "fangirl".

J--A--A about DeviantArt