HPOS support

I’ve reviewed E-Commerce payment gateway – kevin. plugin at it looks like it’s fully compatible with WooCommerce High-Performance Order Storage (HPOS) feature.

Here is the documentation concerning the feature and outlining the steps needed to declare the support:

https://github.com/woocommerce/woocommerce/wiki/High-Performance-Order-Storage-Upgrade-Recipe-Book#declaring-extension-incompatibility