Can't get [agm_members_map] to show map

Hi - I installed the google maps plugin and enabled the add-on BuddyPress member map *BETA* - I also added city info to a field called 'City' which I added to all profiles in the main group using xprofile.

The page it should show all members is empty - it should be here:

I have enabled support access - please take a look and make the map appear with the location of all Buddypress users.