Using Firefox 71.0 64-bit. It is either on all the way, or off. When I loaded my location for the sunset setting, it did nothing. Always on day and night.

I finally decided to uninstall it when everything slowed down to a crawl and started breaking. Never had this happen before I installed it.

I guess that I'll just stick with f.lux instead.

It's works, but not everywhere. Unfortunately, there has no option to report to the developers about the page where extension not work well.
Работает, но не всегда правильно. К сожалению, нет возможности отправлять разработчикам отчет о странице, на которой расширение работает неправильно.

Muy bonito, facebook y google noticias mas fácil de leer. :)

this will help my eyes hurt less while working