There is a solution, though, although more effort:
The profile for SCEP can be created outside of SimpleMDM, exported as a .mobileconfig file and then uploaded to SimpleMDM as a custom configuration profile.
To create the .mobileconfig profile file, use a different MDM like Apple Profile Manager or a tool like ProfileCreator.
I vote for this too.
There is a solution, though, although more effort:
The profile for SCEP can be created outside of SimpleMDM, exported as a .mobileconfig file and then uploaded to SimpleMDM as a custom configuration profile.
To create the .mobileconfig profile file, use a different MDM like Apple Profile Manager or a tool like ProfileCreator.