If you agree to publish your Letter of Guarantee or the scammers signing address this will help other people.
timmo18 just disappeared instead, If he really was scammed by CryptoMixer.io, then i don't see any reason he would not at least avail the Letter of Guarantee so that we get to conclude what exactly happened.
Why would CryptoMixer.io steal just 0.18btc after years of trying to build their reputation, yet they have
huge amounts of BTC going through their mixer