1) Boot up Phoenix launcher and CHANGE character page from 0 to any other number. 2) Load Game up and once it loads quit back out 3) Set Character page back to 0 and load back up.
If you normally play on another page other than 0, then try booting up with 0 and then going back to the page your main is on. Hope this works and is helpful.
I had this issue a few times today. Keep trying every few minutes. I was able to get in after a few tries. It's a problem because too many clients are trying to connect at the same time. There is an overload happening today