I had a similar experience with two of our users.

1. The first issue that I ran into had some curious symptoms; the install looked like it went fine, but then the user's machine would reboot every 5 minutes or so causing them to lose work the first couple of times that it happened. I thought perhaps I got a bad install package, so I tried the enrollment process a second time via terminal on the user's machine with --verbose flag i.e. 'sudo jamf enroll --verbose' and wound up finding that they already had an MDM profile on their machine which caused the Jamf MDM profile to not be installed. I removed the pre-existing MDM profile (something that Comcast threw on their machine for god knows why), and did the quick install package enrollment again, and it worked like a charm.




2. Unfortunately, I never caught what the second issue was because the user manually power cycled the machine before I could get my hands on it/take a look at what they were seeing, and the power cycle seemed to fix whatever issue they had. Their symptoms were a bit different though; they said that their machine would reboot (play the boot up noise) in rapid succession (every 1-3 seconds), but never actually boot up. This enrollment was via quick add package as well, but I haven't run into any more issues with them down the line that seem related at all.

Both of these instances were on High Sierra.