1) how often i can input a wrong passwort / google-authenticator-code ?
Good luck guessing the Google Authenticator Code... it is a 6 digit code that changes every 30 seconds.
![Roll Eyes](https://bitcointalk.org/Smileys/default/rolleyes.gif)
I'm not sure if the numbers ever repeat, but you could probably just type the same 6 digit code every 30 seconds for 30,000,000 seconds and maybe you'll get lucky and hit the code! That's only about 348 days...
![Roll Eyes](https://bitcointalk.org/Smileys/default/rolleyes.gif)
As the others have noted, without the seed and/or the Google Authenticator... your coins are stuck... the Electrum devs can't help you, TrustedCoin can't help you...
NO-ONE can help you
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)