Online Gameplay via Hamachi Fails

Hi guys, I need some help playing online with a friend.
Due to our internet provider we can not switch from IPV6 and we tried with all options but Skirmish multiplayer always fails to launch.

We would like to play via Hamachi, did everything and all checks for PING and network are green and OK but the game still says: Game failed to launch when me and my friend try to play in WLAN multiplayer.

I mention that we tried adding rules for the Hamachi in Firewall settings, also fully disabling any firewall and still the game fails to launch.
What can I do? Anyone managed to make multiplayer work via Hamachi? Thank you!