Remove Add to Cart

Add these codes to the Custom CSS box and Save

Product Block 

/* Product Block */
 div.product-block div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}

Shop – Category Page

/* Shop - Category Page */
body.view-list div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}

All Products

/* All products */
 div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}

Specific Products

With specific products, first, you need to create a tag with the name: natc

Next, assign this tag for products where you want to remove the add to cart button then use code to Custom CSS box

/* Specific Products */
.tag-natc div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}

One Product

#1. You need to edit the product where you want to remove the Add to Cart > Additional Info > Add a Code Block

#2. Paste code to Code Block

<!-- One Product -->
<style>
 div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}
</style>