I am in the same boat as your friends. It seems maybe the keys are taking long to go out because there are so many to go through, and maybe there is some hindrance in the system.
I have no notifications or emails yet, but I am able to access the beta forums now. See if your friends can... http://ghost-recon.ubisoft.com/wildl...spx?Lang=en-GB (then select one of the forums). That link was previously showing a congratulatory screen even for people hadn't been selected, so it's best to try getting into the beta forums even if your friends see that screen (it may still be bugged).
HI there,
Your friends should receive an email to the one associated with their Ubisoft account. Please make sure they check their spam folders as well. They can also check out the beta portal and beta access page to see if their invites went through.