Re: Tv programs in Incorrect language on one channel
Some channels observe the default settings you control in your Roku setup. Some prefer to use their own controls and their own interface on how to find them - to try to maintain consistency between their apps on other devices, I suspect.
What channel app are you having this problem with? Maybe someone familiar with that channel can tell you how to find the appropriate setting.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T