Fixing a browser-source overlay

If an overlay is blank or stale in OBS, isolate the browser source before changing the stream itself.

Checklist

1. Open the overlay URL in a normal browser tab and confirm it loads.
2. In OBS, confirm the Browser Source URL is complete and has no accidental spaces.
3. Press Refresh cache of current page in the Browser Source properties.
4. Check the source width and height match the channel canvas.
5. Confirm the overlay is set to Main and the widget or campaign is active.

Do not paste a private dashboard URL or API token into a browser source. If the public overlay loads but one widget does not update, test the channel and destination connection separately, then recreate only the affected widget.