Firefox accounts doesn't store your password those are stored locally in Firefox directory folder. Sites are the one to determine their password strength not Firefox browser. You should contact the site about that.

Sorry. The issue is that Firefox has "suggest strong password" turned on. That, to me, clearly means that Firefox is to suggest the password, and Firefox is NOT suggesting strong passwords! I've discovered quite by chance that if I try to create a new password on a new website I'm not getting the option for Firefox to generate the strong password until I type a random password and then click to retype the password THEN it will prompt me if I want to generate a strong password. So, basically, you have to create a random password of your own before it suggests a strong password? If that's the case then so be it, but that's bizarre. The suggestion to generate a strong password should come BEFORE I try to create my own password!

anthony, do you use a primary password and have you already entered it before starting?

One other consideration, are you in a private or normal window?

As an alternative, if you right-click the password field is there a "Suggest Strong Password" option?

same kind of issue. Suggest Strong password menu option disappeared (after a update I think, not 100% sure) . I dont use primary password. It is a pain, I have to go back to using another password manager then copy/paste in firefox at the moment. Using 139.0.1 at the moment.