I'm using Firefox browser.
I like the "autocomplete" which routinely fills in user name and password, but recently ran into a problem - on a rarely-used but important site (Doctor's surgery) I forgot my user name and password.
Retrieved user name from surgery (which hasn't changed), BUT they gave me a temporary password
Logged in - autocomplete filled it in after first character entered, as was a password BUT it isn't the "right" password - I now have to over-ride it every log-in.
So - how does one edit the stored password for this site, alternatively, delete the whole existing entry and let it offer to remember it from new?