Quote Originally Posted by Ed_Hazuki View Post
Im having the same problem but I went and register the second XXXXXX-XXX-XXXXXX-XXX code at sqex.to/register. The game was added to my account there but not on mogstation... Im a bit lost here...
I have tried to put the original codes (both) into http://eu.square-enix.com/en/gamereg, but both are saying 'invalid code'.

It seems you have got a bit further than that, did this give you a XXXX-XXXX-XXXX-XXXX-XXXX code?