Firefox still won't remember and autofill my credit cards even though I know it's a feature they offer in other countries, it's a feature offered in my country

Firefox still won't remember and autofill my credit cards even though I know it's a feature they offer in other countries, it's a feature offered in my country by other browsers and it's even a feature they mistakenly expose in the settings page of some but not all of their browsers (mobile only, if I remember right), despite not working.