If you wish to add the MTV channel, you can access the Roku channel store. To include the channel, choose the Add channel tab. Once the channel is added, surf to Mtv.com/activate using the web browser and enter the code to activate the platform. You can access the content by using the credentials. In case of any queries related to the MTV platform, call the support team and get the issues fixed

I will carefully read the issues you just shared, I find there are some places that are not very clear blog post