If your pump has delivered 50% of your Total Daily Insulin over the previous 2 hours, you will get this alert. Basal insulin delivery will be stopped until this is no longer true.
You should tap OK and confirm that your Total Daily Insulin amount is correct in the Control-IQ menu. During this time, you will still be able to manually bolus for food.
For Dexcom continuous glucose monitoring (CGM) specific issues including calibration prompt will not clear, sensor failure 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, please contact Dexcom using one of the options at dexcom.com/contact or report the issue online at https://dexcom.custhelp.com/app/webform.
Please see table for a full list of who to contact for Dexcom CGM issues.
Tandem handles issues such as loss of connection (on pump only) and the invalid transmitter (Alert 29) on pump only.