Sorry to hear you are having issues with the add-on. If you send me an email at [email protected] with some more information about the settings you are trying to use and the page(s) you are having problems with, I'd be happy to try and track down the issue for you.

As a side note, there are some pages that the add-on is not allowed to modify. An example would be the Firefox add-ons website. So if the pages you are having problems with are Firefox pages, that could be the issue.

As well, please note that you currently need to refresh your tabs before the changes will appear on the website. That is being addressed in an upcoming update, but for now you need to refresh the tab. If that doesn't work, trying restarting your browser.

Hope that helps, but if not, feel free to reach out to the email address above. Thanks.