Glad to hear that you like the add-on!

To clarify about the warning that you see, the majority of the add-ons on this platform have that warning. That's because Mozilla only monitors a select number of add-ons on their platform. These are what they label "recommended extensions". Because this add-on is not part of Recommended Extension Program, it's not monitored by Mozilla, so this "use at your own risk" style message is displayed. Add-ons with this warning are not necessarily harmful. In fact, the majority (like mine) are not. More information at: https://support.mozilla.org/kb/recommended-extensions-program