Hi i have the same issue and found some more useful info. The issue is related the a windows 10 update.
but works on windows 10 creator (15063.322)
For a new machine if you :-
1, image the machine (build version will be 15063.322)
2 remove the lan cable on first boot to stop updates and cat videos
3 pause the updates in Os (setting, updates & security, windows update, advance options , pause update)
4, reconnect lan and add to domain.
6, install checkpoint eps
7, waiting for endpoint to install and encrypt the device.
8, then run window updates.
if you have an updated windows 10 15063.674 (may be broken on an earlier version too i need to test) then the uac stops the fde from getting user info...
I need to test to see if you rollback an update if you can get it working.
Hope this is helpful for people and checkpoint can work round issue and fix