Apple TV Plus Suddenly stopped working on Samsung TV

Apple TV Plus app on my Samsung TV suddenly stopped working last night. It doesn't play anything. Keeps saying, something went wrong. There was a problem connecting. Try again.

I reset the App. Now it won't let me log in. Says the same again.

I factory reset the TV. Same issue.

All other Apps on TV are working fine. The Apple TV App with my account on Windows is working fine.

Spoke with Apple technician, but he couldn't help much, since he said your account is fine on Windows.