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The first topic wasn't created by our team, so we don't have control under it. That's all

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Thanx for the answer.
But still strange. If it was a con man, how did he find out and choose your project? Most likely this question is rhetorical. I don't know how scammers of this kind act.
There are a lot of different variants, maybe bounty hunter created this topic, may be the topic was created because of the referral program. I saw when there are a 2 or 3 topics of one project, created by different persons.