I have opened the .POT file and I do see the text you mentioned.
In case you don’t have an updated version of the .POT file I have linked it here https://www.dropbox.com/s/b2glo50iq4sl4tz/parallel.pot?dl=0
You should then be able to translate using the Strings Translations with your translation plugin.
You can do the same with the pages to populate the content sections like “Our Work”.
You will need to enter the page ID of the translated content.
This was someone using WPML but it is similar for Polylang.