Hello,
I'm sorry to hear you're having trouble logging onto your character.
Fortunately however, it is an easily fixable bug that occurs more often than you might think.
You may want to open up a GM Ticket on another character and ask for your problematic one to be ported to a SafeLoc.
If the Game Master cannot locate any location, ask for a port to the graveyard in Undercity or the old removed one by the gates of Stormwind.
Let me know how it works out for you.
Thank you for your valuable time and all your interest in Nostalrius.