I've used this extension for years. It has some quirks and can get in the way when you don't want to auto fill a field, but those problems are small compared to the value you get.

I have used this addon by years and saw no problem. Two factor auth. works perfectly.
Yıllardır kullanırım, hiç bir sorununu görmedim. İki aşamalı doğrulaması ise takdire şayan çalışıyor.