Due to a problem with AWS, many "smart" vacuums or doorbells will stop working
I've learned my lesson and no longer buy WiFi connected "smart" devices, unless I can flash them with custom firmwares.ZigBee isn't without its flaws too but at least I can guarantee that the device doesn't require someone's online service to function. I just wish more devices offered it.Pretty much anything with WiFi in it requires installing some dodgy looking app that requires you sign in with yet another account, and will probably stop working in a few years or when you eventually need to reconfigure your home's WiFi network.