I played around a little bit – and I realised that its not enough to record a venue, but register an organizer too. I register one organizer and all entrys shown correct on the map and the radius search works.
Apologies also for not following up – unfortunately your reply, for some reason, wasn’t flagged up for us. As it’s been a while though I’ll go ahead and close this thread out to keep things tidy – but let us know if we can help with anything else.