Mac server MDM profile manager enrollment problem

mobile-device-managementosx-serverprofile-manager

I use mac os server to active the Profile Manager and Open Directory.
And I want to enroll our devices to the server

Why My ipad and iphone always get the error:

Profile Installation Failed
The SCEP server configuration is not supported!

[enter image description here
If I use the server to enroll

Profile installation failed.
Could not be installed due to an unexpected error.
<NSOSStatusErrorDomain:-1096>

Could anyone help me ! Thank you very much !

Best Answer

I just remove the pow app as following steps:

https://stackoverflow.com/questions/30229773/how-to-uninstall-pow-node-on-mac-osx

 curl get.pow.cx/uninstall.sh | sh

Now It works without any problem.