Gameranger is a very reliable platform that supports MP online gaming. The basic version is for free ! They support 100+ games already.
I´ve started a thread on the Gameranger forum that needs your support. In case they add WW1 to the list of supported games, you could easily enjoy MP
gaming with your friends in the future. Played already Rome Total War, Close Combat etc. on Gameranger.
The only alternative would be to get WW 1 on Steam.
Please post there to support me.
Sic transit gloria mundi !