Products are not adding to cart

Hi There,
I am testing the product builder premium in our development website but I can’t make it work properly.
The images are off and also the products are not added to cart after selection.

https://argo.onlinemarketingguru.com.au/build_gearbox/gear-box-testing/

https://argo.onlinemarketingguru.com.au/build_gearbox/testing/

I will appreciate your help in fixing the above issues.

Regards,

Vino