Apple TV has lost its resume capability. I go back to a show and it begins at episode 1 beginning.

On what device do you have the Apple TV app where this is happening?

Verify that you are still signed in with the Apple ID account that has the subscription or purchases.

Possibly there is something off about your account that this information isn’t stored.

Watch progress is to be stored online as an account property. Please contact the Apple Support staff about why it isn’t working for you, and what they or you can do about it. Contact Apple for support and service (phone numbers) or start your support request online (chat/​email/​callback).

I had this problem too. I logged off from the TV app and logged in again, and it worked.

Hope this will help you and fix it for you too