Hi PP, see if this article helps https://support.mozilla.org/en-US/kb/use-primary-password-protect-stored-logins

the primary password replaced firefox master password so by design it makes you type that in every time you need to access your saved user/passwords for online access to other sites.

It almost sounds like you want to use no primary passwords and under settings logins and passwords you want ask to save passwords checks in addition to autofill logins and passwords checked but take the time and read that osting since t talks about password sync's between different accounts and computers too.

reply if your still having issues a pic of your settings would help also

Thanks you, bro.

Sorry, I understand that we have to retype the Firefox primary passwords to access users and passwords. I just did not explain the right proplem I met that is the websites I have set 2nd authentication codes still ask me to type authentication codes again even I click saved them on the browser already. From now I have solved the problem already that I just turn off deleting history and cookies after exit the browser.

Thanks you for your help!

I have another quesstion is that should I set the primary password complicate or just simple? I dont know if I set it simple then hackers can hack it with software.