Hi, I recently got worms 4 and i really liked it. i played alot of it but then I wanted to play online, but when i tried a problem came up saying "We Could not verify the connection with the remote machine." I dont know what this means or what i can do

I already opened all the ports on my firewall and it still says the same
Please someone help me

Are you getting that message when you try and join people's games, or just trying to get online at all?