Hello,
Thank you very much for choosing our theme and for contacting us.
Please navigate to Dashboard -> Products -> Attributes -> Color -> Configure iterms, enable swatch as shown http://prntscr.com/jskm29
Navigate to Theme Settings > Shop > Attribute swatches > choose pa_color (your color attribute) and enable “Use images from product variations”
Make sure each variation in a variable product has an image: http://prntscr.com/kk870w
If you still have the problem, deactivate all the plugins not related to the theme and provide your site admin access to the private area.
Best Regards