Excellent Quick Buy (Direct Checkout) Plugin

This plugin works for all WooCommerce product types (simple, grouped, external/affiliate, variable, variable subscription, and bookable) except the simple subscription product type. I contacted the plugin’s great support team and they solved this.
I use the AJAX plugin for the “Add to Cart” button. I tried most of the quick buy plugins and all of them failed because the AJAX feature affected them and prevented them from redirecting to the checkout page, but this plugin doesn’t get affected by the AJAX feature and redirects to the destination page (e.g. checkout page)