I have the same issue that you are referring to and for the life of me I cannot figure it out. Even after spending an hour on the phone with Apple support they went through all my computer settings and were also at a loss. They believed it was something in Rig Manager that might be effecting the ability to communicate with security preferences.
If you can't see "Allow" button, let's change your system date and time to past. I changed it 1 years ago.
And run Rig manager again.
Have a nice day.
HEY!
I had the same problem, but i fixed it. I'm on OS High Sierra 10.13.2 .
I Started with updating my profiler via Flash drive, and updated my rig manager to the latest version
I found the Kemperprofiler.kext file from the content of the program package. (this is the file that you are asked to allow to be moved into system extensions folder)
Then I moved it to the extension folder inside the library folder of my computers disc. (MAC / library / extensions)
I restarted Rig manager with my profiler connected, and it worked.
Hope it works for you guys!
where do I find Kemperprofiler.kext ?
Thanks
I went into the program folder in finder, and found rig manager, right klick/Show Content/Contents/Resources and in that folder it was.
I can't find that file. there is not a .kext in my folder.
Ryan
I found the .kext file already in my extension folder. Had already been moved there.
SNOt sure what to do next.
Ryan
I hade the same problem and this worked for me:
1: Removed Rig manager software
2: Removed the file KemperProfiler.kext from /Library/Extensions/
3: Reinstalled the Rig manager
Now everything seem to work just fine 
I hade the same problem and this worked for me:
1: Removed Rig manager software
2: Removed the file KemperProfiler.kext from /Library/Extensions/
3: Reinstalled the Rig manager
Now everything seem to work just fine
Wow Magnus, thanks!! After hours of trying to solve this problem, you gave me the right tip 
This works for me!!
