Account Driven User Enrollment with JamfPro

I'm using JamfPro Cloud to try out the new Enrollment Flow "Account Driven User Enrollment".

I have one domain exsample.com.

After authenticating that domain with ABM, I created one user.

Then I built apache as a web server for that domain. I set it to be accessible via https and set the JamfPro cloud Enroll URI with ".well-known/com.apple.remotemanagement" as JSON.

Then I tried signing in with an exsample.com ABM user from settings> general> VPN and Device Management on my iPhone, and when I ran the apachetop command on the target server and confirmed the request to ".well-known/com. apple.remotemaagement".

But then I get the following error: "Your Apple ID does not hae proper privillages to perfom this action"

Does this Enrollment Flow assume that the MDM server is on-premise?

What's missing in our settings?