Install NEWSTTR on Roku
Open this Link on any Browser https://channelstore.roku.com/en-gb/details/8e3c090a3da85ab186fe02a793679475:4477a6631f0fd9fa9d577858a585ddcd/newsttr
when link will be open then login your Roku account
Click on Add channel
Then Check on Roku TV
If you have Search Option then Search
Search NEWSTTR
Install it
NEWSTTR