Thanks for the feedback, and sorry it stopped working for you. Version 0.3 is out now and fixes several causes of exactly this, so please update, reload the tab, and give it another try. If the volume still doesn’t change, tell us which website and Firefox version you’re using, or use the Send Feedback button in the popup, and we’ll sort it out.

Hi, we'd appreciate some additional details about what didn't work for you.

The current review doesn't give us enough informtion to identify the problem. If you could describe what you were trying to do and what happened, we can investigate it and work on improving the extension.

Thank you.