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If it's only required to authorize transactions, he can log in (I have re-read the OP and realized that he already can, lol), and get the seed in the security center to then import it into electrum. I'm not sure if that'd be considered as "authorize a transaction" and ask for the second password.
No I can’t log in completely. After I put the normal password it brings me to another window where I need to put the second password to than check my wallet.
It’s absurd because I have the second password written down but it doesn’t work.
So nothing at all I can do? I’m talking about an account made in 2011-2012