Getting Started with CheckoutGuard, Checkout rules for Wix Store: Complete Guide CheckoutGuard, Checkout rules for Wix Store is a Wix native app that lets you block or warn customers at checkout based on shipping location, membership status, time of day, or what's in their cart. This guide covers everything you need to get up and running. Contents Installing CheckoutGuard Starting your free trial Setting a Geo Restriction rule Setting a Member Only rule Setting a Time Restric