This thing has become a buggy mess, it pops up constantly asking to save passwords to websites that have no password change or added to it, clicking never save password for this site does nothing as it just keeps asking.

Can't open the password window after loging-in, the pop-up is simply broken

Unnecessarily complex, wastes a lot of time, frustrating, and needs to be greatly simplified.

This used to be so awesome, but wow, lately it has become a buggy mess. I can never trust it to actually save an updated password, half the time I think it did, only to discover it didn't, or it would generate a new password for a site, but then silently generate another one and save that one in the vault instead, leaving you wondering why the new password you made for a website isn't working. And whatever they did to the interface made it so much worse from a user perspective.
But the final straw for me is random web-client-content-script errors I started getting whenever I would click certain buttons on websites. Took me hours to track it down to this extension.

As others have stated, the extension frequently breaks in a way that makes it think that you have no passwords saved. Fixing requires uninstall/reinstall. It happens about once a week to me.

Constant glitches. Can't reach server, etc. I can't even understand how a company like this can survive with such a terrible extension.

The Firefox extension won't load.

Stop wasting time  getting locked out of accounts or filling  passwords and  forms online! Instead, start wasting your time disabling and re-enabling, uninstalling and reinstalling, and otherwise constantly attending to this extension which seems to work perfectly - 60% of the time. I find it obnoxious when people complain about a product they're getting for free. Yet, I find myself here, writing a one star review for a product with a very generous free tier. But what am I supposed to do when this thing has wasted so much of my time and probably cost a couple years of my life by boiling my blood so many times.