Hello.
Something similar happened to me. As it turned out, my save data was corrupted, probably from how many times I just turned off my system instead of exiting the game proper (Don't ever do that lol). Since your character data is saved server side, your best bet is to delete the save file system side. Sadly, you"ll have to redo all your gear sets or whatnot, but at least they"ll start saving again. Don"t confuse it for the save data for your system settings for the game...it's the *other* save file.