I have a handful (probably over a dozen in total) of Insignia smart switches, which Insignia discontinued support over a year ago, but most of them work well in HomeKit. However, four of them were in a drawer not connected to my network, and when I try to scan the code and add it manually, they first appear on the device screen, but after I touch them, HomeKit gives me an error. ” I couldn’t add an accessory. ” I understand that as long as you have that code, HomeKit will still allow you to add devices, but I don’t misunderstand or do I have another problem?