Originally posted by CaptMalamute:

I have play the game earlier. They said i need to log in to Ubisoft account, i have then it says i need to input the CD keys which i cannot find, i have seen the tutorial but the keys wasn't there. I try to cancel the input of the CD keys because i want to search for it. i didn't find it and start the game, i can play without inputing the CD key, then after the next day when i want to play it again suddenly its says like this

"There was a problem authenticating the ownership of this product. Please contact customer support, if you need help solving this issue"

can someone help? because i cannot play it again.