How do I create BuddyPress groups?
I'm not sure why I get this question so often as creating groups has nothing to do with the theme, it's part of the BuddyPress plugin. However since I'm always asked please check the following:
1) Go to Settings > BuddyPress and under the Components tab make sure User Groups is enabled.
2) Go to Settings > BuddyPress and under the Pages tab make sure a page is selected from the User Groups drop down menu.
3) To add a link to this page go to Appearance > Menus and add this page to one of your menus.
4) If you can't create user groups from the frontend, go to Settings > BuddyPress and under the Settings tab enable Group Creation if you want to allow all users to create groups. If you still can't create groups deactivate all plugins (except BuddyPress) to see if this resolves the issue. If it does, reactivate the plugins one by one to fix the problem plugin.
If no plugin is causing the issue activate the Twenty Seventeen theme, if this doesn't resolve the issue, the theme is not causing this problem and you will need to contact BuddyPress support who will be able help you.