I use a Cyberchimps theme ifeature pro that has a setting for the max width in pixels I use 1920. This works great for my site.

But, when I enable Advanced Theme Integration in the eCommerce Product Catalog plugin it seems to be ignoring that setting. I have provided 2 links that show the display beyond my menu bar.

https://ktfcu.org/product-category/other-items-for-sale/

https://ktfcu.org/more-services/products/leather-sleeper-love-seat/

If I use Simple Integration it looks great but of course I lose the benefits that come with Advanced Integration.

I have currently set the Catalog Container Width to 80%, it takes about 60% to line up with my menu bar. Using the Catalog Container Width would be okay except it makes it really look narrow when viewed on a smartphone.

Any suggestions?

Thanks, Bill

https://wordpress.org/plugins/ecommerce-product-catalog/