Setting up Facebook on new Tablet

[king1]

so from the Firefox main menu, top right, click on passwords.

use the search box to find facebook, hopefully you will find a password for FB in there

Nothing there for Firefox. Thanks for trying to help. I still can't believe a large generated password got into the Facebook account of someone else.

yeah it seems unlikely doesn't it...

you could try password recovery tools, this one is one I use from time to time
https://www.nirsoft.net/utils/web_browser_password.html
or
https://www.nirsoft.net/utils/passwordfox.html


But be warned, you will need to disable most Antivirus and security software to download it.  It is not malicious but does recover passwords hence why AVs go nuts