Watch 7 is not working with Apple TV fitness

Hello Susanneed,

We would like to see how we can help you with Fitness+ not working as expected. Have you been through all the steps in this link to be sure you are running compatible versions of OS: How to use Apple Fitness+ - Apple Support

"Work out on Apple TV

1. Open the Fitness app. 
2. Select yourself. Select Other if you're not signed in as the primary account and don't have your Apple Watch paired with the Apple TV. To pair your Apple Watch, open the Workout app on your watch and enter the code displayed on the Apple TV.
3. Find and select your workout.
4. Select the Play button, and your metrics from your Apple Watch will appear onscreen.
5. Pause and resume your workout as needed on your device or Apple Watch.

After your workout ends, you can review your results or start a Mindful Cooldown."

Cheers!

Hey Susanneed,

We're glad that you were able to find the cause of the issue! If you need our assistance again, please don't hesitate to reach back out to us.

Best regards.