The problem is that these hooks do not work. I tried to uncomment “$this->activateCheckOutHooks();” in WooCommercePublicModule, and it not working. I think because the function “process_checkout” (wc-class-checkout) through Ajax runs before loading the plugin, that is, before registering the hook. So can you please show me how to do that? Beacause I get a lot spam through checkout page.