A couple of DEP/MDM issues I am running into.
The indicator light at the bottom of the MDM window shows green for MDM Service, blank for Push, and red for DEP token. I was able to successfully import my Push certificate and DEP token from Apple. I have been able to install the DEP profile on a test machine successfully and it appears in the list of machines. It doesn’t appear in the list of devices for the MDM Server in Apple’s DEP portal however.
EDIT: Build version might help! MDS Version 2.0 (20096)