It has something to do with the way Activision verifies the Key.. You send the Key to them, they send the guid to server, set a challengekey for you IP and every player that connects with your IP gets the same guid, no matter what CD key.
Shoutbox archive
Maybe Fabio can continue the experiment with a unique ID in the "uoconfig_mp" file.
Playing though a proxy or VPN to a relative is an option (just to change the IP from one pc). But it will increase the ping.
That wont realy work. There are times it will work and you can play on your own account. But (in my experience) most of the times it uses the same account for both/more players if it comes form the same IP address.
Du kannst mal versuchen als erstes auf den Server zu gehen und dann dein Sohn z.B.. Probier mal und sag dann bescheid wies aussieht
Guten tag alle. Fabio . Wir spielen hier mit 3 Personen . AggroRene das bin ich . AggroLuise das ist meine Frau. AggroMax das ist mein sohn. Alle mit verschiedene CD-Key´s.
someting isnt going right here player 3273, player 1201, player 3374 with links 
https://modszombies.com/page-playerstats/?u=3273 https://modszombies.com/page-playerstats/?u=1201: probably 
even this one pops up with his name https://modszombies.com/page-playerstats/?u=3374
https://modszombies.com/page-playerstats/?u=3273 https://modszombies.com/page-playerstats/?u=1201: probably even this one pops up with his name https://modszombies.com/page-playerstats/?u=3374I see 3 players with the name AggroRene: player 3273, player 1201, player 3374. 3273 is now at level 16 and I guess its created about 2 a 3 months ago. So he is used it for some time already.
By the way Merry Xmas to you all ! 
---> Herzliche Weinachten alle ! >>>>> Boldog Karácsonyt mindenkinek !
---> Herzliche Weinachten alle ! >>>>> Boldog Karácsonyt mindenkinek ! 
Does anyone do modding/mapping here that could help me make maps and guild me through it?