Browsers can restrict autoplay, particularly when video includes sound. A visible play button may simply require a user action rather than indicate a broken source. Click or tap the intended playback control and distinguish that behaviour from an actual error after playback is requested.
Look for the first interaction
A page may load its interface correctly but wait for a click before starting media. This is common behaviour in modern browsers. Do not repeatedly refresh the page when the player is asking for an ordinary user gesture.
Review site-level controls narrowly
Some browsers offer autoplay or sound permissions for a specific site. Read the browser’s documentation and change only the relevant setting if needed. Allowing every website to play sound is unnecessary for diagnosing one trusted web player.
Keep account and playback errors separate
If clicking play produces an error, record that message and test another supported item. Autoplay policy does not explain a failed login or a missing library. A useful support report says whether the video never received a user action or failed after the action was taken.
