The add to cart button in the bulk variations grid isn't working
If you're using WooCommerce Bulk Variations and nothing happens when you click the add to cart button in the variations grid, please check the following.
1. Have you selected a quantity?
When the variations grid first loads, all the quantities are set to 0 and the add to cart button is greyed out because there is nothing to purchase. The button only becomes active once you have selected a quantity for one or more variations.
2. Does your site use custom AJAX add to cart?
Some websites have a custom AJAX add to cart function, which does not follow standard WooCommerce conventions. For example, the OceanWP theme has an “Enable AJAX Add To Cart” in Customizer → WooCommerce → Single Product which breaks the add to cart buttons in WooCommerce Bulk Variations.
If the add to cart button isn't working then we recommend checking whether your theme or another plugin is doing something similar, as you will need to deactivate it.
You can check this by switching to a default theme (e.g. TwentyTwenty) and disabling all your plugins apart from WooCommerce and WooCommerce Bulk Variations. If this fixes the add to cart button then you can re-enable everything one by one until you find the culprit.