can't connect if use mobile data (but use wifi works)

[myusuf17]

i try build webrtc demo (android version) and try to connect demo.cloudwebrtc.com as server
if using connection from wifi is works can share video and sound
but if i change to mobile connection cant share video or sound

fyi
using wifi or mobile can access list device

[fre391]

same here.....I can connect via wifi connection.
I also can connect two HTML clients via mobile connection, but I can not connect one HTML and one android client. This is not working

[DVendy]

you need to open the port for turn server

[AuronChoo]

Need to open port UDP 19302
https://github.com/flutter-webrtc/flutter-webrtc-server/blob/master/configs/config.ini