i have ALL the Qardio devices. The thermometers (both models), pulse Oximeter, and BP cuffs still are working and updating Apple Health. The Base 2 still functions, but stopped updating the app (and Apple health) on April 29, 2025. I have reset it, reconnected it to WiFi and wasted hours on it. Googling the company turned up this thread. Since it connects via WiFi, and if the servers are kaput, then the cause of my “interruption” is clear.
This makes me more sad than angry, because their devices are the best in category. I have anticipated this day would come and tried (purchased and currently have) similar products from most competitors. All of them are inferior in one or more ways (app, Bluetooth reliability, device quality). I would love to know the back story why they couldn’t make it.