And once again, into battle – 2.

I downloaded the mod, the template generator, and the map schemes. I figured it out and played around with it. Where and how can I arrange a friendly match?
And another question - which game client is used? I found at least 2 different ones - 1C and Buka, and they seem to be incompatible in online games... There is also a version from GOG.

The best thing to do is contact KillAndAction - he will invite you to Discord (anyone can invite, but KillAndAction is still the organizer of this Discord channel). All the players who play the TE mod hang out there. And most of these players regularly sign up for tournaments. You can arrange a friendly match with someone and test everything out.

P.S. I'm not 100% sure, but it seems to be the Buka version.