I tried many things, deactivated antiviruses, firewalls, cleaned game folders in user/documents, tried another internet provider, another PC and after all I have reinstalled my Windows, but it did not help and I still can't send a turn to the server.
I have assumptions that this problem may be related with this event ( https://www.slitherine.com/forum/viewto ... 8&t=102312 ), because that day, before maintenance related to these two games, I played a multiplayer game in Pike and Shot and all worked fine.
And there is another thing, in log in screen, when I enter in multiplayer lobby, there is a "serial number" in the top-right corner and now it looks unusual, I recall it was way different before, without whole stack of 0000 e.t.c.
So, If anyone know were problem is or have encounter with this before and knows how to fix this, it would be really nice, because it's very sad to left without multiplayer in these games.

P.S Other games, that use PBEM+ server, like Field of Glory, Sanctus Reach, works well.