We checked the authorization through the fb – no problems were identified.
Please log out (log out) completely from the site.
Please try to reinstall the game client:
Open explorer and paste in the address bar field the link below –
C:\Users\USERNAME\AppData\Roaming (where USERNAME is indicated – enter your computer name)
C:\Users\Артем\AppData\Roaming – The computer name can be viewed in the system properties.
In this location there will be a folder EspritGames https://prnt.sc/w7z4pr, delete it, and uninstall the client itself via Add or Remove Programs. Restart your computer and try installing again. Report the result.
If the problem persists, enter your game nickname and server.