Why is it needed? and how is it better to warn? the flag of the first type is visible to newcomers and forum guests and warns that there is a risk of losing money. And my flag is of the second type, it already hangs out a red warning and is visible to everyone. So what is better than a level 1 flag then?

Whatever nickname this scammer changes in the telegram, then he will change it too. The chain starts with the forum account, and if you see that the account has a bad reputation, it doesn't matter what the scammer has in the telegram, old or new.