Game Trackmania doesn't start

Hello everybody! When I try to open the Trackmania game, it asks me to enter my email and password. I enter the data and click Log in, after a few seconds the message returns:

An Epic Games service is unevaluable at the moment. Please try again later.

I tried to contact Ubisoft support but the tips they gave me didn’t work.
I have already uninstalled and reinstalled the game, without success. And if I try to right click and go to Manage/Check files, nothing happens.
(For the record, all other games and platforms work fine on my computer - Stray, Rocket League, Diablo, World of Warcraft, Counter Strike GO, Pubg, Dragon BAll, GTAV, Fall Guys).
Would anyone know how to resolve it?

Hi CavanhaMan,

It looks like the issue you’re describing is about utilizing the Epic Game Store as a player. Unfortunately, this forum is to assist developers and publishers and is not equipped to be able to assist you and you will need to reach out to player support.

Please check out the player support website here: Epic Games Technical Support & Customer Service | Epic Games