Could you please send us a screenshot of how it looks with default WordPress theme or with the template you used before? The height of the products rows depends on your product images size. And you can configure them in Appearance -> WooCommerce -> Customize.
Yes, we visited that link but don’t see any differences https://gyazo.com/e9bd8ba7fdd38ce95cf316e8097022fe
On your previous website, you just have bigger gaps between products. If you want, we can give you a custom CSS for this.