Why will my Apple Watch Series 5 not pair with my Apple TV HD for Fitness app

Hi k5v9nmc,

Thanks for coming to Apple Support Communities for help today with Fitness+ and using it with your Apple Watch and Apple TV. It sounds like it won't pair for you but will for your wife.

Please see: Set up Fitness+ on Apple TV

"Choose who is working out

If you use Family Sharing, you can easily switch between family members in the Fitness app on Apple TV. Friends or family outside of your Family Sharing group who are Apple Fitness+ subscribers can also work out using your Apple TV.

1. Open the Fitness app on your Apple TV.
2. Select your name, or select Other if you don’t see your name.
3. If no one is signed in on your Apple TV, you may need to select Sign In in the Fitness app first.
4. To switch to another family member or guest, select the account icon in the top left corner of the Fitness app, select Sign out, then select another user."

Have a fantastic day!

k5v9nmc,

Thanks for the further information. It was helpful.

Please see this page: If you see "Pairing Canceled" while starting a workout in Apple Fitness+

"Add Apple TV to the Home app

1. On your Apple TV, go to Settings > AirPlay and HomeKit. You'll see "1" in a red badge next to AirPlay and HomeKit. Don't see a red badge?
2. Select Finish Home Set Up.
3. Unlock your iPhone and hold it close to your Apple TV.
4. Follow the steps on your Apple TV to add your Apple TV to the Home app and finish setup."

You may also want to restart the Apple TV, iPhone and Apple Watch.

After that and following the article's steps, "If you go to Settings > AirPlay and HomeKit on your Apple TV and don't see a red badge or an option to add Apple TV to the Home app, contact Apple Support."

Cheers,