skyfox rank

I hadnt been active for a couple months and my rank dissapeared has this happened to anyone else and if so how do i get it back?

If you play creative, factions, kingdoms, skywars, kitpvp or just happen to see me join the lobby you'd know I have a lot of ranks. On skywars - VIP+ / On creative - Shadowfox / On kitpvp - VIP+ / and the member rank on everything else. However I wish to change my username and I will not until...