Quotation Marks

There are several quotation marks in the Unicode. You can find all of
them if you search for quotation mark in the overview tab.
If your quotation marks don't show up in a font that you have exported
the first thing you should try is adding both hard and soft marks:
U+22, U+27, U+2018, U+2019, U+201C, U+201D and in some cases many more.