Build not working properly via EGL, but the same .exe from folder works well (!!)

Hello! our build works well if we launch it via .exe, but not working well we launch it from Epic Games Launcher, how it possible? The same .exe, but joining server in the game cause endless loading. All the rest client part works, but we can’t join any of our servers.

I literally manually launching the same .exe that should be launched by EGL and it works well. Anybody knows in what directions I should search with this problem?

Previous builds works well also and we do not changed exe configuratons for builds.

Build target - client;
Shipping configuration.