Hello,
First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :)
I saw the screenshot you attached and visited your website.
For the add to cart loading and loading please check how it works with the default WordPress theme just to check whether the issue is with our theme or not.
2) And for the cart displaying empty and the colors not displaying deactivate all the third-party plugins and provide with the admin panel login details of the website with the permissions to debug then we will troubleshoot with the theme plugins.
Best Regards.