Hello,
The hotspot captive portal can work with broader range class B subnets as well, if you need a larger pool if IP addresses.
Please use a good IP subnet calculator like http://www.subnet-calculator.com/ to get the right direction on calculatig your desired address pool.
Also, the IP subnet of 192.168.182.0 is not right, it must be 192.168.0.0 for any class B (larger then 254-address pool) mask. Gateway should also be 192.168.0.1 and not 192.168.x.1
Best Regards,
Steve Hars,
Hotspotsystem.com