is there an official topic or where feedback?

I don't know what you mean by that? You want to raport some issues with this project or just discuss about it?

In the future for report bugs, but for now i want ask questions to developers. it would be more convenient if they were at this forum.

I think the best and more effective will be use their telegram channel: https://t.me/ModulTradeIO

is a member of the team the moderator of the telegram group?

Yes of course, its the official group, its listed on the first page and also on the website.