I am still given the message about service account not being registered to this account. However, I am registered on Mog Station through Steam and all of my registration codes were through purchasing through steam. So I do not understand why I am unable to log in. I reinstalled and tried the "-issteam" workaround but it doesn't work.

I just bought the new Shadowbringers expansion and I can't log in to play. My subscription days that I purchased are slowly being wasted as I am unable to log in. Many years worth of money have gonne to this game and I can't even log in to play it.

Please fix this issue SE.