The new Time in Range feature was added to the t:connect mobile app in version 1.4, released March 24, 20201. If you have an earlier version of the mobile app you will need to update the app through the App Store or Google Play. Only in-warranty t:slim X2 insulin pumps with software versions 6.3 or 7.3 and above are compatible with the new t:connect mobile app. If you have an older software version you will need to update your pump through the customer portal.
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.