Hi, Welcome to the forum.
Sorry you're having trouble starting the game. As suggested in the pop-up, please contact Support about this. They can further assist you.
Thanks.
does the far cry ubi forum recognize you? Can you log in and post comments? (obviously appears you can). Have you ever played the game? If you have, you can unplug your internet connection and a window will pop up allowing you to play "offline" so no ubi - UPLAY connection is necessary. I would try to remove UPLAY from the computer and reload it. I would also try removing and reloading punkbuster at their online site. Cant remember the name exactly but a google search should get it.
I have had problems in the past where UPLAY wouldn't recognize my computer even tho the forum would. with correct password and user name and email address. It's buggy.