Displayеd whether multicast-streams via the app?
To playback multicast-streams rtp and udp necessary to switch on UDP Proxy function.
1. Press the Settings button.
2. Choose Playback. Put the tick in UDP Proxy field.
3. Click on the field Enter UDP Proxy server URL.
4. Enter the link to UDP Proxy server and press OK.
Notice that you also need to switch on UDP Proxy function on your home router/switch.