You’ve got something screwed up somewhere. Your buddypress pages should be blank when viewing them via wp admin > pages. They are just placeholders bp uses. Secondly, (i’ve seen people make this mistake), they should be all be parent pages. Third, the get rid of members-2. It should just be members.
Your groups page is /groups-2/ (http://vineshare.com.au/groups-2/). Change that to groups.
Your activity page looks fine http://vineshare.com.au/activity/
As far as things not working, have you turned everything on in Settins > BP > Components?
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