I want to sell litecoins from my Electrum Wallet. This is done via 3 steps (2 or 3) but he does not go to the 3rd step (option sign is not active).
You are trying to sell litecoins to what exactly on your litecoin wallet? ( You're using
https://electrum-ltc.org/ as a wallet right? )
I don't think they offer direct selling, but rather you will need to sent the litecoin to an exchange such as
http://poloniex.com /
http://bittrex.comLiteCoin Electrum is simply a software wallet to store your litecoins on.