T-Mobile/Uconnect Causing ACC/FCW Error

Constant ACC (adaptive cruise control)/FCW (forward collision warning) error when using the T-Mobile 4g adapter for Uconnect services in a 2015 Grand Cherokee. Dealership has replaced ACC module twice and Uconnect services are no help when contacting them. Besides the ACC not working, FCW does not work and would not automatically stop the vehicle in case of emergency. As you can see from my video, when removing the T-Mobile adapter, the warning disappears. This will eventually get worse and the error message will be constant. The module will then need to be replaced for the 3rd time. I would be out of pocket over $1,200 for the ACC module but luckily my extended warranty has covered all but $100.