I'm pre-order in EA.com direct, and already success to enter my serial code and play single play. but found that everytime I re-run the game it said that my serial code NOT FOUND, I try to re-enter the 20-long code once and once, it accept my code, but when I try to join a MP game, it will reject and said my serial is invalid! What's wrong? Or what information I need to provide??

+1 i have just the same problem. Ca somebody help us?

Let me explain more details about the problem.

In this EA download manager screen you can see that I have a valid serial code.


But everytime I enter the game, it just ask me to input it once and once, seems it doesn't save that info.


I input it for several times. And the code is correct, because only a valid 20-digit long key can pass to this screen.


Bu still get such error when I try to enter any MP game.

Bmhk, I have the same thing .... Can you explain how to fix Administrators

Same thing there. I joined game several times, and then add +skip_intro key to game shortcut. And then I star receive this error message. I'm announced as cheater or what? Just because I modify game shortcut??? WTF?

I play in MP few minutes than exit the game. When i try to login another time to MP, game show me the message that my key is invalid, how can i solve this problem? And my LE codes doesn't work.

Same here... the menu will just say i have an invalid serial code or something...

I'm enter in MP. Just waiting guys.

Again that ****. Argghh.

Same here serial number doesnt work!

Guys,seems,for Cryteks today is not a release date yet.Its ok with ur serials but u need to w8 a little bit(1-2 days),I have the same problem,so we gotta just w8

Ugh, same problem... i hope they fix this.

Are you guys for real? The first six threads in this forum are about the EXACT SAME PROBLEM. It's a server issue and they are working on it....

somebody solved the problem? Why do administrators keep silent?