Please make sure you are running the latest version of the ElkRP2 Programming Software and the ELK M1XEP is running Firmware 2.0.34 or later. Please use the ELK M1XEP Special Updater Utility to check the Firmware in the M1XEP https://www.elkproducts.com/elkdoc/special-m1xep-2-0-34-updater-utility/
The Special Updater Utility will tell you 1) The M1XEP is already running Firmware 2.0.34 or later, 2) is Too Old to be updated, 3) Will attempt to update the M1XEP to version 2.0.35