tldr: It can be really useful but also super frustrating when you run into bugs.

This service is a blessing and a curse. When things go well, I love it. It makes everything a breeze. I know that my passwords are much more secure, and it is well worth the price.

On the other hand, when things go poorly, and it doesn't save the password, and then deletes it from your clipboard at a really crucial moment, it can be really frustrating. While that can be avoided by being extra cautious and while I was able to eventually find the history of recently generated passwords, it can still cause a ton of frustration.

Another big issue is when the extension occasionally bricks the entire browser for up to a minute. When the icon is yellow, I avoid clicking it like the plague.

With these factors, I came to the conclusion of a 3.