Hi my friend is having issues logging into the forums since the launch of forums, he can log in the game fine and has no issues getting on the game. Just the forums he is getting this error



Details:

Steps:
1. pressed the "SQUARE ENIX Account” button in the upper right
2. Keyed in Square Enix ID & Password, then pressed the "Log In" button
3. Message "Temporary Session is invalid. Please try again." appeared as per pic attached


Date & Time: since the launch of Official Forum
Location: Singapore
Operating System: WIN 7 Home Premium 64 bit
Browser: Firefox