I reached an agreement with him and even offered to pay twice the amount of the transaction from my LBTC balance but when I instruct the site to pay him they Send Me this Message
How can one force LBTC to pay him and let me access my account and withdraw my BTC, I really have hated their support and I don't want to trade with them again. I also think they want to Keep the 0.2BTC balance I have in an account with them, is it legal for them to do so as they offer no justification.
You shouldn't ever entrust someone to unlock your wallet just because they know or they claim to know it. You should just learn to do it yourself and never entrust everything just because some people claim they can or it is their service. Also, LBTC doesn't control the actions of its traders, they only get their information and can be used once a buyer reported a trader, if and only if the trader and the id itself is legitimate (flaw of some KYC that can be fooled). Lastly, LocalBitcoins already has that kind of issues back then, and it was always a constant negative review compared to the 'positive' ones.
You should move this to Reputation board, as this provides a user experience against the reputation of Local Bitcoins. Thank you!