Why is the Liner Web Highlighter add-on no longer working?

Hi, I use the add-on everyday and suddenly it’s been removed from my browser and from the add-on store. I may have to start using Chrome now. Does anyone know why this happened and when it might return?

The FireFox Liner page now says one of the reasons is “Mozilla removed it. This can happen when issues are found during the review of the extension or theme, or the extension or theme has been abusing the terms and conditions for addons.mozilla.org. The developer has the opportunity to resolve the issues and make the add-on available again.”

I also emailed Liner and am awaiting a reply.

Thank you.