Artificer theme, featured product images not working on front page

Since the update to the new Woo3.0 and the upgrade to Artificer theme 1.3.17, my friends and I all have the same issue. We cannot get any of our featured product images to show on the front page.
It’s a free Woo Theme so no Woo support but I have found these two questions here which are far too technical for us, but show we aren’t the only ones with the problem. There must be thousands of Artificer users out there with broken sites.

https://wordpress.stackexchange.com/questions/265967/debugging-why-featured-images-have-stopped-showing-in-woocommerce-on-the-homepag

and

https://wordpress.stackexchange.com/questions/265490/artificer-featured-images-stopped-showing-on-homepage?rq=1

Anyone have any ideas on how to get Woo to fix this theme so we can all get our shops back online properly? We just aren’t able to do all this techie stuff behind the scenes ourselves so we need a theme update from Woo.