By default the detected IP will be suffixed by /24, if your IP is /22 then you’ll have to add this manually. This has to do with the broadcast address of the network. With /24 while your network is /22 you probably won’t detect anything. Once you see devices appear on the add-on, the integration should work as well. Before anything other than /24 wouldn’t work, but it should now. Please try it again and let me know if this works.