Hello,
Have you tried to link your internet (if it's not a direct connection too) to the WAN interface and keep it as simple as you can? If it runs build 14311, you only have to set your operatorname and location ID under services>hotspot in the hotspot router. You can eventually get results with connecting routers LAN ports, but it's not so fortunate to do so.
We do not recommend DD-WRT with FREE SOCIAL, this is true. So you should use HotspotWRT/Coova or another brand of routers.
Regards,
Istvan Hars,
Helpdesk @ Hotspotsystem.com