Haha, русский на нашем форуме! Not sure what's going on with your adaptation of the HTML template, but if it's related to updating it from v2 to v3, I've had some issues myself. Maybe we can discuss it in more detail and see if we can figure it out together?
I'm not sure if there's an official announcement for v3, but I did notice that the devs released an update for v2 recently. Maybe it's worth checking the official GitHub or Discord channel for more info on the v3 release.