First time I tried loggin in to AC2 Web Battle I was unable to do so, due to not having linked my Gamer ID. After much google'ing I learned that (please correct me if this next part is wrong) I have to log into the Ubisoft server through the AC2 menu, which would also allow me to download the wallpaper I purchased in Uplay. However, I am unable to log into the server, since the game simply exits to the desktop.
I would really appreciate it if somebody could help me.