Pingendo loads your system fonts by default. To import more fonts from Google go to the THEME panel on the right side of the editor. Scroll down to the TYPOGRAPHY section: here you can define two different fonts for paragraphs and headings.
Select the folder simbol next to the font name and a modal will appear. On the side you will see the link for importing Google fonts. Click on the link and a field will open with an example of the snippet that you will need to paste.
Visit the Google Font website and browse the typology you like the most. Select one that you want to embed. On the bottom right you will see a panel. Copy paste the import snippet in the Pingendo modal.
Now the fonts are available on the list. Click on one of them to apply it to paraghraphs or headings. You can always delete them with the X botton.
When you will embed a new font you will see some changes in the SASS source. At the very beginning there will be a new line like this:
and lower these others (according to which family has been changed between base or heading). In this case I want the headings to use PT Sans font.
$font-family-base: Bubbler One;
$headings-font-family: PT Sans;