If you are having difficulty keeping your Dexcom CGM connected with your t:slim X2 insulin pump, it may be because your Dexcom transmitter is linked with your Dexcom receiver instead of your t:slim X2 pump.

This guide provides tips and best practices to ensure both devices communicate efficiently with each other.

Learn more about why this can occur and how to troubleshoot this issue.

You might see this message if the email address you used to sign into Tandem Source does not match the email address we have on file for you.

If you have both the Tandem t:slim mobile app and Tandem Mobi mobile app installed on your smartphone, the Tandem t:slim mobile app will be disabled and you will receive this warning.