Unis disappear after 6 months of inactivity but GCSirin may have changed that recently so they could still be there.
Sunsets do not disappear so those would not have been removed.
Characters do not get deleted after inactivity so nothing would have changed.
If you know account name and email tied to it, PM GCSirin or GCDank and they can help.
Also, the ranking system changed significantly and now factors in army points. You can basically have the best gear and be 1150 but if your army isn’t in the top 2 or 3 in points, you’ll be in out of the top 50 or 100 players
I think after a certain period of inactivity you get removed from the player rankings. I suggest logging into all of your accounts through the support.redmoonclassic.com to check on them, if you can’t login via the game.