I purchased Roku streaming 4K stick in US and installed in India.
I fail to add Amazon Prime Video for which I have subscription. Also could not find Indian OTT platforms like Disney+ hot star, voot, Sony love etc.
pl suggest how to add these channels to Roku steaming player device.
Sorry, but you can't. Roku doesn't support India and many providers don't allow their channels/apps on Roku devices in regions Roku doesn't support.
I bought Roku streaming stick in U.S.A from amazon.com whether I can activate here and will work here in India and how to activate it.
Just follow the directions to activate it. “work”? To some extent it will likely work. Since it’s not supported there, it will be hard to say how well it will work. Many well-known channel/apps will probably not be available since Roku is not supported there. Some more-local apps may not work, because they don’t believe that Roku has enough presence there.