Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Please be aware that channel availability/access on Roku devices will vary from region to region. A Roku device will work in any location, however, channels may not be available on your device in that location, based on each channel provider's discretion. For more information, you'd want to contact any specific channel/service provider to inquire further about whether they offer their channel/service on the Roku platform in your region.
I think here is not support community. And Roku is not number 1 streaming company. Because we are still waiting very stupid things. Very old Samsung and LG tv support Amazon but new Roku Ultra and others not.
It's up to the channel providers to make their Roku channel available in different regions. You might want to contact Amazon and see what they have to say about it, but if you can't find it then it's probably because Amazon hasn't made it available.