Protected playback can require a compatible content-protection handshake across the source, display and intermediate equipment. A failure may affect the video even while menus remain visible. Use supported connections and manufacturer guidance; do not treat this as a reason to bypass protection or install unknown software.
Record the error rather than guessing
Some applications show a specific protection or display-compatibility message, while others provide only a black image. Note the exact wording, device model and connection route. Sound without picture can also come from an unsupported video decoder, so the symptom alone does not establish a protection failure.
Simplify the legitimate connection
Temporarily connect the supported player directly to the television with a suitable cable if practical. Remove optional capture equipment, adapters or switches from the test route. Restart the devices using the manufacturer’s recommended sequence, then retry the same authorised title without changing account details or unrelated network settings.
Check every device’s capabilities
An older receiver or adapter can limit the formats accepted by the complete chain. Consult its documented support before buying replacements. If another supported output works, report that difference to the app provider. Avoid sharing private playback URLs or searching for tools advertised as removing protection; the useful goal is a functioning supported viewing path.