TV app catalogs are curated per platform, per region and per model year, and player apps that load external playlists come and go from them. The result is that the same TV can show the app one month and not the next, and a set bought two years apart from the same series may not offer the same catalog. The Samsung listing itself is dated, showing a last update of 18 May 2023, so even where it installs you are running a build older than the Android version most guides were written against. None of this is a fault on your line, and re-entering credentials will not change it.

1. 1Catalog availability varies by region and model year
2. 2The listed build is dated 18 May 2023
3. 3Disappearance from the store is not a subscription problem

No, and treating them as identical is why so much advice fails on a Samsung set. They share a name and a login screen, not a codebase or a release schedule. Settings that exist on Android, including some decoder and buffer controls, may be absent or behave differently on Tizen. Sideloading is also not the escape hatch it is on Android sticks, so you cannot simply install a newer build. Practically, this means you should verify your line elsewhere before spending time in the TV app: the same credentials on a phone will tell you in two minutes whether the service or the platform is the variable.

1. 1Separate builds, separate release schedules
2. 2Some Android settings are missing on Tizen
3. 3Verify the line on a phone before debugging the TV

Run the same credentials on a second device on the same network, ideally a phone on Wi-Fi. If the phone plays the exact channels that fail on the TV at the same moment, the line is fine and every remaining fix belongs to the TV. If both fail, scope it further: one channel is a source outage, one whole category is server-side, and everything at once is your session or your connection. This ordering matters because Samsung owners frequently cancel a working subscription over a platform limitation, and the two look identical from the sofa.

1. 1Phone works, TV fails: platform or network on the TV
2. 2Both fail on one channel: source outage upstream
3. 3Both fail on everything: session, line or connection slots

That combination is a decoding problem, not a streaming one. Audio decodes cheaply; video does not. On a set whose decoder does not handle a stream's codec in hardware, frames arrive and cannot be rendered fast enough, so you get sound over a black frame. HEVC channels are where this shows up most, since HEVC delivers a similar picture at about half the bitrate of H.264 but needs supporting hardware. Test a 1080p channel before a 4K one: if 1080p plays and 4K does not, you have located the limit, and it sits in the panel rather than in the app or the subscription.

1. 1Sound with a black frame means decoding, not bandwidth
2. 2Test 1080p before 4K to find the ceiling
3. 3HEVC needs hardware support to run at about half the bitrate

When you have confirmed the line works elsewhere and the TV still cannot hold a picture. A current Android-based stick or box plugs into HDMI, decodes HEVC in hardware, gets app updates on a normal schedule, and gives you the buffer and decoder controls Tizen may not expose. Installs on your line are unlimited, so moving to a stick costs nothing on the subscription side; only simultaneous streams count, at 1 to 5 depending on plan. It is a practical answer rather than a defeat, and it removes the platform from the equation permanently.

1. 1Unlimited installs, so adding a device costs nothing on the plan
2. 2Hardware HEVC decoding and regular app updates
3. 3Full buffer and decoder controls become available again