FF always erringly autofills my name into a particular contact form
I have Autofill turned off and have also gone into about:config and set to False all form autofilling options. Yet FF continues to autofill my first and last name into respective fields in a form I use for my customer contacts in a web-based business software I use.
It does that when the fields are already filled with a customer contact's' names, as well as when I start with an empty form to enter in a new customer contact.
I don't even know how FF got my name nor where to go to delete it so it will stop autofilling it.
What's the solution?
I can think of two other ways the page might have your data and fill it:
(1) If you are signing in, this information might be from your account.
(2) Whether you are signing in or using the site anonymously, the site might have saved the information in a cookie. If you want to view and selectively delete cookies set by the site:
While you are on that page, open the Storage Inspector using Shift+F9. Firefox should open a new panel in the lower part of the tab listing out cookies for the site. Sometimes information is in plain text for you to read, and sometimes it is encoded. It may not be possible to determine what is in all of the cookies, but you can right-click delete anything you like. If you do that, please reload the page (click the Reload button or press Ctr+R) before working on it further because that might break the form.