The admin is busy and if someone wanted to change their username for example then they have to wait and not even sure if admin did read and will consider changing it. In your case is, the admin has nothing to do with it. Forum users can accuse you that the platform is a scam. No matter what the accusations are as long as the project is legit then you don't have to worry about. Those accusations are nothing if you can prove that it is not a scam. Accusing a forum user is not a violation in forum and the accusation could be proven if the evidence is strong and if the evidence can't support the accusation then nothing to be afraid of.