think there is a couple of misunderstandings here…
first, admins cannot belong to usergroups… usergroups get limited permissions based on your settings – admins get full permission for everything… so thus they cannot belong to a usergroup… If you want to give admins a badge, use the special rank feature to assign them a rank and badge… that is what you see for Andy and I here… its on forum – components – forum ranks…
second, your moderator adding is a known issue addressed here several times (broke in 5.1.1)… It will be fixed in the next version of SP 5.1.2 due to be released in the next week or two… in the meantime, go into your database and the sfmembers table… for each user you want to be a moderator, set the moderator column to 1…
third, if you want to display badges for users, you will need to add the template function for them into your sp theme… by default, our themes display the forum rank badges and not the usergroup badges… so edit your spTopicView.php template tag and find the display of the forum rank badges… will be:
sp_PostIndexUserRank()
and replace it with:
sp_PostIndexUserMemberships()
and if you are going to display forum special ranks (they are different than forum ranks) be sure to leave that forum special rank template function in the theme…
as always, we highly encourage you to make your own theme and not edit ours to keep from losing changes on updates… see: http://codex.simple-press.com/codex/themes/theme-basics/creating-a-theme/