Why isn't a group showing up in F1?
If there's a group in GV that's not showing up in FellowshipOne, then double check the group's F1 Group Type setting in their GV profile > edit tab, as it might not be set. Or it is set to an F1 group type that is no longer set to an F1 group type to sync with GV. You can check that by going to Settings > Add-Ons > F1 and look at the F1 group types that are showing to sync with GV.