We are offered to play a match.

Don't forget what's at stake in this match. You can play again after a decision is made regarding this game. Whoever pushed for the game version that led to this situation has lost.

Did Dubrovin Pavel and his opponent play on TE-Lite? Was TE-Lite installed on Dubrovin Pavel's computer?

P.S. Pavel, well done.

I think the players will sort this out themselves. And if they don't, that's what the judge is for! A point won in battle and a technical point are two very different things.
Let's all do our own jobs: players play, judges judge, and representatives of the portals will handle organizational matters and conduct discussions on behalf of all players. Otherwise, there are more off-topic posts in this thread than posts that are actually relevant. What amuses me even more is that most of them are left by those who don't play in the tournament and have absolutely nothing to do with it. Just "talking," right, Captain? :D
I would like to ask all outside observers to refrain from provocations.
Good luck and victory to all!