If you have been struggling to get a beta key, and getting this maintenance page over and over and over.
1. Dont Just get back to the loginpage here https://secure.square-enix.com/account/app/svc/login?cont=ffxiv_beta_ap&ret=https%3A%2F%2Fsecure.square-enix.com%2Fenqt%2Fe%2FFF14OBTENTRYJP%2Fhtml&retl=ffxiv&retu=http%3A%2F%2Fentry.ffxiv.com%2F&lng=en&rgn=eu and try logging in. You have to go all the way back to the entry page here http://entry.ffxiv.com/ and start over every time.
2. Don’t try to follow some online guides to bypass the server errors and just get a key, they do not work anymore, just try every hour, and might get lucky.
3. Some have reported that disabling cookies in your browser may give you this page, try to enable them, or lower your internet security settings to the default.
Good luck, but currently I think no one is getting any Beta keys as the error remains “Applications for the FINAL FANTASY XIV Open Beta Test have been temporarily suspended. Please wait until we are ready to accept new applications and then try again.”