Each TV has 2 MAC addresses (1st is WiFi, 2nd is Ethernet) and a 2nd MAC is activated automatically after you switch to another connection type and restart the app. MAC address is unique for every TV and cannot be changed manually.
Because the app every time when you start it, need to load the list from your source or provider's server.
This is maybe because of your internet connection, please check at first your internet connection befor you contact your provider. Many times it is caused because of the connection and not because of the provider!
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