Name the exact stream before changing the television
A working STV Player box set and an unavailable live STV channel can be consistent results. The service’s current help limits the main live STV and STV+1 streams to people living in its broadcasting area, while describing other viewing options for people elsewhere in the UK. Start by writing the actual channel or programme name. “STV does not work” hides the important distinction between a programme page, the main broadcast channel and a premium sports channel. Buying another streaming stick cannot by itself establish a different geographical entitlement.
Make one comparable observation
Use the genuine STV Player interface and note whether the problem is a missing live option, an availability notice or a playback error after selecting an available stream. Keep a separate result for a box set that actually starts. A hypothetical viewer elsewhere in the UK might be able to play an on-demand drama yet not receive the same main live channel as a household in the STV broadcast area. That example illustrates why a successful box set is not a complete live-channel eligibility test. It does not establish where any particular reader is entitled to watch.
Send the right availability question
A useful support description says which stream was selected, the viewing country or region, whether an on-demand title works and what the screen actually says. Include the device and app version when the available stream starts but fails. Keep location verification on the service’s legitimate support route; a request for help is not a reason to falsify an address or change location through a proxy. Once the result is classified, the next action becomes clearer: check geographical availability, review the relevant membership or investigate an actual playback error. Those are separate tasks even though they begin inside the same app.
Questions answered
Does a working STV box set prove access to the main live STV stream?
No. The live broadcast-area rule and on-demand availability need separate checks.
Does every STV account include Premier Sports?
No. Verify the named paid product and current channel entitlement in the official account information.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.

