Unable to log in

[Inferno28]

Hello dear support team,

I got the urge to return to FAF but my computer is currently tied to an account of an old friend of mine who played while he was visiting me.
Sadly I have no way of contacting him or logging in on another pc due to the lack of one.

Might it be possible to untie the account manually?
The account in question is called GhostofDaybreak, the account I would like to reactivate is equivalent to my username here.

Thank you for your time and answers in advance.

Greetings,
Inferno28