If you are unable to see quantity incremantor on AeroCheckout page then there could be two possibilities due to which quantity selector is not visible your AeroCheckout page.
Here we will discuss both possibilities one by one to check why Quantity Selector is not visible.
Possibility 1: Hidden using Product Inventory Settings.
If product is set to sold indiviually through product inventory, Quantity Selector will not be visible at the Checkout page.
Step 1: Suppose you have product “Variable Ship Your Idea” in your cart for which Quantity Selector is not visible. Now edit this product in WooCommerce “Products“.
Step 2: Here click on “Inventory” tab. Untick option labelled as “Enable this to only allow one of this item to be bought in a single order” if ticked.
Step 3: Click on “Update” button to save changes.
Possibility 2 : Hide from product field on AeroCheckout page.
Step 1: Edit your AeroCheckout page, click on “Form” section and then “Products” field.
Step 2: Click on “Advanced” tab and untick the checkbox labelled “Hide Product Incrementor” to show productor incrementor.
Step 3: Make sure to click on “Update” button and “Save Form” to publish changes