This question is probably targeted toward a rather small audience, and I'm not sure if this is even the right subforum, so bear with me. My fiancé has type 1 diabetes (the lifelong juvenile one), and just received his new Tandem t:flex insulin pump. One of the first steps is to connect the pump to a computer via USB (no bluetooth, sadly) and download the T:Connect Uploader app from the manufacturer's website. I got the app downloaded on my rMBP just fine, but it doesn't seem to see the pump, even though the pump says it is charging. It's somewhat inconvenient because you can't create a user account until the app connects to a pump. Basically I'd like to know from other diabetics who use a Tandem brand pump about whether it's an incompatibility issue with Sierra or because my fiancé hasn't used his pump yet, so there is no data to upload.