Getting error trying to add MLTG to ecCloud

When trying to add MLTG-360 to ecCloud, I receive an error message stating Serial Number and/or MAC address not found.
Please advise how to properly add MLTG-360 to ecCloud.

The most likely issue is that your device may not be added to the ecCloud device database. Email and provide the serial number(s) and MAC addresses of the items you have that need to be added to ecCloud.