If you tried to play Aion today, chances are you experienced some kind of issues. There’s plenty to go around, from huge latency to Gameguard errors and client crashes.
Thulf did a thorough job of collecting various issues players are experiencing:
GameGuard errors: the “GameGuard was modified” affected him as well as thousands of other angry players. You may also have to close down your firewall in order to connect. This list of frequent GG errors might help you get to the bottom of it.
ID/password mismatch error: usually happens if you didn’t update your game account password. To update your password, login here with your NCsoft master account, click Game Accounts, select your Aion game account and click the Change Password. You can use the same password as in closed beta, but for some reason you simply must enter it again.
Login/Authentication issues: this might help you resolve it.
There’s plenty more, so whatever problem you are having I suggest googling it. There’s all kinds of unconfirmed fixes and solutions around. The best advice I can give is to be patient for now.
The worst part, as Thulf already mentioned, is the lack of support from official sources. Most of the info you will find is from Aionsource or similar sites: even though there’s a lot of traffic on the beta forums, the Known Issues and Customer Support forums don’t provide too much help.
NCsoft is no doubt working hard to figure out the causes of these issues, and the best we can do is hope they get it fixed soon, otherwise we’re going to see a very rough launch and many disappointed players.