But in this thread, when I involved my friend (with whom we made several ЕdТech startups and who was also had a channel suspension issue), I had a conversation with @TeamYouTube https://twitter.com/TeamYouTube/status/1479514052984549385
Finally, after Grammarly's tweet and second appeal my channel was unsuspended. I think, help from maxltv was a key point in this process, so thanks again!