Hi jsalemi1, The payment methods would be part of the site preferences. Be sure that you are not clearing cookies & site data or using a Private window.

Or, the site might be telling Firefox to not save form history. This is especially common on email and banking websites.

See also:

Control whether Firefox automatically fills in forms https://support.mozilla.org/en-US/kb/control-whether-firefox-automatically-fills-forms

Firefox doesn't save web form entries https://support.mozilla.org/en-US/kb/firefox-doesnt-save-web-form-entries

Private Browsing https://support.mozilla.org/en-US/kb/private-browsing-use-firefox-without-history

None of that seems to be working, I am able to have autofill options and usage, just not for payment methods.

Try this: Type (or paste) about:config in the address bar and press Enter select "Accept the Risk and Continue" in the search bar at the top enter

extensions.formautofill.creditCards.available

be sure it's value is set to True by clicking the Toggle button at the far right.