Hey AlexG - I hope you are doing great! What USB modem are you using ? I am curious about the overall experience with the USB fail over you described.    Check out the Skyus SC line - this should remove some of your challenges you have been facing    https://www.inseego.com/iot-modems/   ... View more

There should be a new Skyus SC product coming out this month - with support on the MX line that has onboard connection management logic. This device will allow you to monitor and support the connection outside of the Meraki Portal.    https://www.inseego.com/iot-modems/   Check out the Skyus SC line  ... View more