1. Log in at the http://www.aeriagames.com/
2. Go to Games/EdenEternal
3. If it still shows you logged in at the EdenEternal home page, log out of the site; if you are no longer shown as logged in, you're good.
4. Log in to http://edeneternal.aeriagames.com/
5. If you can successfully log in to the EdenEternal homepage, you should be good to go for the game.
Hope this helps, and if it doesn't, well, I tried.