Hi,
The spacing you see is reserved for the “Sticky Add to Cart” option (here’s a video showing how it works, https://woodmart.xtemos.com/theme-settings-tooltips/sticky-add-to-cart.mp4). However, since the layout of your single product page was modified by hiding the main Add to Cart button, the “Sticky Add to Cart” option cannot function or display correctly.
In this case, you should either:
1. Restore the main Add to Cart button on the product page, or
2. Go to Theme Settings → Single product → Add to cart and disable the “Sticky Add to Cart” option.
Kind Regards