The distinction that matters
Samsung app availability depends on the actual television, software and region. The Tizen platform is different from an Android device connected to the same screen. A model year alone does not establish that the selected current player or account method is supported. Keep the television and any external streaming device distinct in the enquiry.
A controlled way to check
Record the TV model, software and store region. Use Samsung’s documented Apps search and inspect the actual listing and publisher. If the required app is missing, report that discovery result before trying to diagnose a login that has not yet occurred. Ask for a supported alternative route rather than installing an unrelated similarly named application.
An illustrative comparison
One example viewer is using a player inside the Samsung TV; another is using an attached Android box through HDMI. The screen brand is the same, but the installation route and settings are different. A third viewer may find a different set of apps in a regional store. These are reasons to record the actual environment instead of copying a generic recipe.
What to record or ask next
Once the correct compatible player is installed, request the one-day free trial and test remote navigation, account entry and an essential source. No physical Samsung/account test is claimed by this article. The linked manufacturer guidance establishes a platform procedure, not a service compatibility certificate.