I used to play this game back in 2007 but the disk cracked. This year I bought a second hand version of the disk on amazon. Tried to load it on and it would not accept the serial number as it says it was registered to another account. So I used my old email adddress and persona and it let me in and I just created a new soldier. But now i cant do the multiplayer because it says I am using an old version and need a ea link. So went back on and created a new account using a new email address and linked the two accounts. But now it is saying I cant use the multiplayer version of the game because the serial number is related to an old account (presumably the previous owner of this disk). So How do i use the multiplayer game?
