I recently returned two (2) Index S2 Smart Scales for a full refund. I was having connection and data upload issues on my home Wifi and technical support isolated the problem to a Hidden network SSID. I keep my Wifi network Hidden (not broadcast) for security reasons. Garmin stated that the Index S2 Smart Scale will not function on a Hidden Wifi network.
I certainly hope Garmin will eventually revise the Index S2 Smart Scale firmware or release a new version of the S2 Scale that will support hidden networks.
I'm really getting tired of manually entering my daily weigh-in to the Connect App each day. :(