Are you connecting to the right realm? Which realm does it specify in the bottom, right corner of the login screen under the "Terms of Use" button? If it shows anything other than "Nostalrius Begins," you could be connecting to the wrong realm.
You can find most of the things that you can do in this post viewtopic.php?f=45&t=11569. If nothing is working, then you should contact a GM or Administrator on this support page. I hope it will work for you.