2. That is something your forums needs to make sure about that by verifying users telegram/discord/whatsapp etc account or something like that! You are allowing the users to provide any shit details without any proof on their profiles! Even everyone can send negative trust feedback to others!! By the way thanks for explaining this and make the scammers aware of the tricks they can use to fuel people by making this accuse that the telegram account was not mine or some shits like that!
You are asking theymos to require KYC from every user to protect you and some other fool? C'mon, man. It's your responsibility to keep yourself protected from the scammer. This forum is way bigger than you can imagine (at least a hundred times than your said forum). How can you imagine applying KYC to them or even monitoring them through rules? What can the rule even do if you are going to trust someone who has no trading history here; nor any feedback earned. It's your fault, you have no one to blame here.