A. Check for regional restrictions. Some channels may not be available in your area due to licensing agreements. You can try using a VPN service to connect to a different region where the channels are available. Download a VPN app, select a server in a different country, and then try accessing the channels again.
B. Refresh the channel list. Open the app, go to the settings or channel list section, and look for an option to refresh or rescan channels. This can help in loading any new channels that may have been added.