adding devices

Hello carsey60,

Thank you for using Apple Support Communities. If you signed up for Apple TV+, you can access content on linked devices that are using the same Apple ID. You'll want to make sure your other devices are using the same Apple ID account you used to sign up for Apple TV+: Sign in with your Apple ID - Apple Support

If other devices are using a different Apple ID and are part of your Family Sharing group, you'll want to make sure you're sharing purchases with them: How to share purchases with your family - Apple Support

If you're using the correct Apple ID across all your linked devices, try restarting your devices to help refresh things.

We hope this helps out you. Thank you for using Apple Support Communities.

Greetings carsey60,

Since the Apple TV+ account works on one of your devices, we can rule out that the issue is related to the Apple TV account. That being said, if you are using Family Sharing, make sure that you have purchase sharing enabled. If not, follow the steps here to enable it: How to share purchases with your family - Apple Support.

1. If you haven't set up Family Sharing yet, set up Family Sharing.

2. Open the Settings app.

3. Tap Family. If you don't see Family, tap your name, then tap Family Sharing.

4. Tap Purchase Sharing.

5. Tap Continue and follow the onscreen instructions.

6. To confirm which payment method will be billed, tap Purchase Sharing again and check the Shared Payment Method information. This will be the family organizer's default payment method. 

If you do not use Family Sharing, make sure that all devices are using the same Apple ID and password. If they all are linked to the same Apple ID and password, make sure that the internet connection you are using is working. You can test by checking to see if other apps and channels are working on your TVs. If they are, try restarting all devices as suggested above. If that does not work, you can try to uninstall and reinstall the Apple TV app to see if this corrects the issue. For help with adding and removing apps, you'll want to reach out to the manufacturer of your TV.

We hope this information helps you out.

Kind regards.