You can find the Buy Now button on your product page and in the drawer cart. When your customers click the Buy Now button, they will not be able to choose a pickup/delivery/shipping date and time in our widget—the button will lead them straight to the checkout page. Read more about it in Shopify dynamic checkout buttons article.
Disable the Buy Now button
If the Buy Now button wasn't automatically disabled, you can disable it manually to avoid customers bypassing our widget in the cart page.
In the Shopify admin, click Online Store.
Click Customize next to the theme you would like to edit.
Click Home page, then click Products.
Click Default product.
In the Product information section, click Buy buttons.
Uncheck Show dynamic checkout button in the right sidebar. Please note that some themes call this setting differently—accelerated checkout, dynamic checkout, buy now.
Your theme should now have the Buy Now button disabled.