I do not at all think that the ban on talking about rewards and, in general, about the bounty campaign in the main group is something suspicious. In the conditions, everything is clearly stipulated, where and what to ask. For questions, there is a bounty campaign chat. The organizers do not want to turn the chat about the project, roughly speaking, into a dump. Everyone knows perfectly well that there is a bounty chat, and what questions are constantly asked there. Who might like it, I think I shouldn't answer.