My UFC app just stopped opening on one Roku tv. It has worked fine for 2-3 years and now it will not open on the one tv. It is just that one app one the one tv. Any clues? I can watch on my laptop. I had my son put the app on his tv and I watched it at his house.
First try the simple "System restart" from Settings->System->Power.
Check for updates by highlighting the icon on the Home Screen, pressing * on your remote, and choosing "Check for updates".
If it still doesn't work, try the old "remove, restart, re-add" routine:
We’re upgrading Roku Community to bring you a faster, more mobile-friendly experience. You may notice limited functionality or read-only access during this time. Read more here.
Planned Downtime:
Community will be unavailable for up to 24–48 hours during the upgrade window during the week of May 19th and you may notice reduced functionality.
In the meantime, for additional assistance, visit our Support Site.
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