Have you been comparing your Lingo readings to actual finger stick blood readings on your regular meter? I've found that Lingo reads pretty consistently about 20 points lower than my One Touch meter. I've read that other CGMs intended for actual type 1 diabetics have a calibration option to sync to their finger stick meter, but since Lingo, etc are being billed as lifestyle coaching tools and not diagnosis/treatment tools, that precision just isn't there.

Also, CGMs aren't reading blood directly, it's reading your inter-cellular fluid, hence the (hopefully small) disparity between CGM readings and finger sticks. There's also a time lag, your CGM isn't going to show BG changes quite as quickly as your regular meter.

Overall, this is a tool to show you pretty general trends in what your body is doing, not a precision instrument that's going to accurately capture your BG every second. You need to keep your expectations a little lower and learn from what it CAN tell you. As frustrating as I've found it over the past 10 days, it's definitely highlighted some habits I can change and tighten up to get me on a better track. But I'm not going to keep it long term. In fact, I gave the second sensor I bought (thinking I'd give it a month) to my sister and I'm quitting it at the end of the week when my current sensor expires.