If you indeed have internet connection at the location, you can try follow the app's quick guide to see if you can get it working on your smartphones.
You can download the quick guide here:
https://goo.gl/UtqPAgFor web browser access, you would need to forward ports on your router. The ports you need are http (80), listen(8101), and media (1935) port. We recommend changing http port to another port number if you want to forward the ports.