I opened all access to the game in windows firewall, and I do not have other dedicated software of this kind. About port forwardind - no, I havent touched it because I`m not familiar with it

Would you be so kind to link some FAQ on port opening?
By the way, I`m using simple router D-Link. My IP shown by "google" is the same as in routers settings (I assume its correct).
Anyway, I think that Larian should post at least some info on the case. Otherwise its no longer DRM-free game, because we are limited to steam, and the problem with steam is that D:OS is region restricted, at least that is what Steam tell me.