Cannot Add Variant Quantities
If you are unable to select quantities on Wholster’s cart page, and see greyed out inputs instead of light blue inputs, your products are configured within Shopify to be unavailable when out of stock.
In order to allow quantities to be input, the variant must either have stock, or have the box checked in Shopify that says “Allow this product to be purchased when out of stock”.
Alternatively, you can select “Do not track inventory” on the product variant page in Shopify.
Here is link to the information Shopify offers on this: