Apple TV plus free trial not working

The free trial is for Apple+ content only and does not include Movies/Shows from the iTunes store.

That would have been a 2nd gen, which never had a TV app. The TV app is meant to consolidate content across various providers. That screenshot is from the main 'watch now' screen. If you have not watched anything yet then it will just be recommending content, but it can be from various providers. Once you start watching it will populate the 'up next' queue so you can continue watching titles from all the various providers you subscribe to.

When you claimed your offer you would have gone into the distinct Apple TV Plus section, and that is where you would need to go if you want to see only the content that is offered in that subscription.

The Apple TV app houses not only Apple TV Plus, but also all content from the iTunes store (done via rental or purchase) along with other Apple TV Channel subscriptions. Apple TV Plus is a service for Apple originals, and those titles are exclusive to that so they wouldn't be available anywhere else.

You can go into the distinct Apple TV Plus section to see exactly what is included with that service, which is the area you would have gone when you claimed the free offer.

Apple TV Plus is a service for Apple originals only, as previously stated. All the titles within that screenshot, which include Dads and Dear, are only available on that service. They will not be available on Prime nor other streaming services.

The Tv app can integrate with other providers, like Prime, which is why you will see titles from those providers within the main Tv app.

There are a total of 25 series and 5 films currently available on Apple TV Plus, and more added each month. Please go into the section for Apple TV Plus, as previously advised, where you will see exactly what is included solely within that service.