Same issue here (Jevelin 5.3). The mentioned translation is set in Jevelin template file inc/templates/woocommerce-progress.php
. There are other strings like this that cannot be translated. “Checkout”, “Done”, in the same template for example.
Would you please update your theme’s POT file?
I could overwrite the templates in child theme, but it’s not the way I’d go if there already is a POT file to work with.