Guys. I Think I found the way.

Go to: Documents > My Games > FINAL FANTASY XIV - A Realm Reborn

Step 1:Back up (Relocate and Preserve) FFXIV.cfg.

Step 2: Delete the FFXIV.cfg

Step 3:
Open Your FFXIV.Allow the game to create a new FFXIV.cfg
You will find that your character has returned to their own server and is able to log in, but the interface will be messed up.

Step 4:Close the Game. Open new FFXIV.cfg and remember the number in the <Network Settings> WordId and delete the content after DktSessionId.

Step 5: Delete the new FFXIV.cfg and paste the Step1 old FFXIV.cfg back.

Step 6:Open the old FFXIV.cfg, then go to <Network Settings> and change the WorldID to the number from Step 4. Also, delete the content after DktSessionId.

Step 7:Everything is back to normal now!