this should still work for MC1.20.2,
i recommend using version 1.0.3,

version 1.0.4 - has issues on boot up
version 1.0.5 - has issues when you update to it without fully regenerating your config file, and a possible other issue aswell

currently all versions have a bug where you can only have 1 server added to a item at a time in your shop,
example: someone buys a item that has commands for your survival and creative server, it will only run commands for the server they are on, skipping the other one