Marketify theme and EDD FES integrations error

I recently updated EDD and am now getting an error with the Marketify theme I’ve purchased on Envato.
The EDD team told me that I need to update the theme because there is no such code in the theme since they’ve updated FES. Could you please check into this?
The error I’m receiving is as follows:
Fatal error: Call to undefined function edd_get_label_singular() in /…/wp-content/themes/marketify/inc/integrations/edd-fes/widgets/class-widget-product-details.php on line 9

This is a general forum. You should contact theme author here:

Ok thank you!