I'm not sure if I misunderstood, but I'll try to explain. I meant I can log in to the square enix account management (literally everything else works except support and the forums work sometimes) and there it says I can't attach a one-time password to my account because I have not added any cd-key to my account. However I have purchased the game from square enix EU store and it is on my account (atleast it says registered on 7th of august).

I would believe the problem is that the system does not understand to link my account management account and my square enix EU account together, because when I log in to the account management it says this:

however this is the date I registered my beta key on and not the date I bought the game on.

To recap:
I have bought the game from square enix store on 7th of august
the account management thinks I only have beta on my account and lists the date of June 21st (because that is the date I registered my beta on)
I have not received any cd-key other than early access code which I've already applied to my account and I want to apply one-time password (android) to my account, but it tells me I have to apply a retail cd-key before I can do so.