Yes. The target glucose limit will sync between your t:connect mobile app and web application to give you the same calculation of time in range regardless of which application you are viewing.
If you customize this range, there is sometimes a short delay in updating both systems to match. (i.e. if you update the setting in your mobile app, you may need to wait up to an hour to see that change reflected in your t:connect web application.)
Tandem handles issues with the connection between your Dexcom transmitter and t:slim X2 pump, questions about calibration, the “---” display, and sensor failures after the 2-hour warmup period. To report a sensor failure after the 2-hour warmup period, visit tandemdiabetes.com/G6Form
For all other CGM issues, including sensor failures during the 2-hour warmup, “no restarts” alert, or physical problems with your sensor or transmitter, such as bleeding, bruising, skin reaction, adhesive issues, applicator issues, or broken wires, you should contact Dexcom using one of the options at dexcom.com/contact.