The "David Frosty" had posted this in a thread earlier about someone asking how to invite friends. "Head over to the "Closed Alpha Portal" that you were directed to when you clicked the link in your e-mail. There should be about four tabs and one should say "Invite Friends". They need to be on your uPlay Friends List in order to appear!" Hope that helps any. Best I could find on it.
Just in case i can help figure it out, dunno what you've already tried, but from what I've heard there should be a button on the email you received to invite friends. the button opens a link and you can invite people from your uplay friends list that haven't been invited yet. Could be wrong but what I've read.
