so I curious if this has happened to anyone else...

So I been playing stormblood content since early release and I have a lvl 62 monk as well as a lvl 68 ast. I went to log on today and the game said I needed to enter in a registration code for stormblood. I checked the mog station and stormblood expansion has been removed off my account. So I tried to enter in the pre registration code again but it was the code had already been registered.

Has this happened to anyone else...also how does this happen???