If decoin scammed, you create a proper scam accusation in the board suggested to you by one of the members.
If you have strong proof linking Decoin to MSKO you can also create a free scam accusation about them with all the evidence so that members can stay away from both projects. It's the best thing you can do right now.
I have proof, it's not a problem.. linking mr shay perry, decoin to msko is not very difficult.. he doesn't even hide.. linking members of their teams who are also in the 'team' decoin, it's not difficult too.. .. i even have a telegram message with an msko admin who offers me to try to solve the problem with decoin, then who is not even in the team decoin.. I will wait a little longer to see where this discussion will with this person before making a complete summary of the situation..