2FA account name at kraken

[stefstef]

Hi,
I had to reset my phone and the old two factor authentification doesn't work anymore for kraken. Using google authenticator, I could easily restore the poloniex 2FA, as I have the 20 figures OTP key and the account ist just "login"@poloniex.com.
Can someone please tell how kraken does construct the account name in the authenticator, its not just login@kraken.com. As i still have the 20 figures OTP key for kraken, it should work.
Thanks!