evidence: I'm not sure if this is something with an app update or something with my device itself but my qardio arm will not pump up. This just happened with the past couple of app updates. The motor turns on but does not fill the cuff all the way up with air. I've been placing the device like I always have as instructed. Sometimes I can play with the cuff to get it to work. Tonight I was needing to take my bp and it would only pump up if I put it on my rist. I've replaced the batteries to see if that would work but no luck.