I think I found it and can't explain why it doesn't work. I have 2 network cards on my PC. The basic one that came with the PC and a Bigfoot Network card which was the thing 4 years ago when I bought this PC. I always been connected to my Bigfoot card but just tried on the basic network card and it works no problem
Bottom line looks like there is some kind of issue with that Bigfoot network card that prevents me from connecting to the game. I could not even guess what it is
From now on sticking with the realtek card and screw bigfoot hehehe
