I send emails to my red flagged affiliates reminding them why they signed up for SFI. I go over all the benefits and a little comp plan, then I tell them they are in danger of losing all of this. I then let them know that they should log in and take another look. This has worked a couple of times.
EDITOR'S NOTE: The simple act of logging in buys them a whole another year in SFI. To keep from losing them, just get them to log in.