MacOS – Device Manager fails to start on a macOS Server 5.2

I have setup a working Open Directory Master on on Mac-Server-1 running macOS Sierra and macOS Server 5.2 (latest as of today). I have also successfully started the Device Manager and enrolled a client computer with no problem.

I have now also setup a working Open Directory Replica on Mac-Server-2 running MacOS Sierra and macOS Server 5.2. However, when I try to activate the Device Manager on the Replica, it stays Disabled.

Is this by design that Device Manager can only be active on the Master? Or is this a bug?

Steps:

1. In macOS Server -> Profile Manger -> Device Manager, status is Disabled
2. In macOS Server -> Profile Manger -> Device Manager, I click Setup... button
3. New window appears telling me I can manage devices. I click Next
4. The window now changes and asks me for a Name, E-mail, Telephone, and Address (presumably to generate a certificate?)
5. I enter the info, and click Next
6. The next window appears, telling me to click Finish. I do.
7. The window disappears, returning me to the macOS Server -> Profile Manger window, where the status of Device Manager still shows as Disabled

Ideas?

Edit1: I tried uninstalling Server.app and deleting /Library/Server/* and reinstalling the Replica from scratch. Same behavior.

Edit2: I tried reinstalling the entire server from scratch. Same behavior.