I am in the exact same boat. I bit the bullet and registered my game on that account anyhow (because I KNOW it is the right account), but my character is not showing. I only made one because I wanted to focus on him because I actually got into the server I wanted.

Also, my character is showing on Lodestone so I think it may be a glitch in the character preview in Mog Station. I can't be certain though until I log in from home...