Thanks for posting to the Community.
Do you have any updates you can add to the thread?
I am also looking for information to be able to perform the automatic registration, with the old wavelink AOD servers, we used this shortcut:
(with a url shortcuts for simplicity)
Is there something similar to enroll the devices without using the 'Ivanty Agent' application (no appstore account on many devices) to the MDM 2017.3 ?