DHCP setup not working on CCR...tried everything

We’re needing to setup DHCP on our Core CCR. I’ve set this up many times on other boards, but never this one. For some reason, things are “sticky” and lockup when in setup and the “next” button is simply grayed-out after selecting the interface, then on the DHCP range part.

I’ve tried rebooting, upgrading tot he latest firmware, etc., and nothing seems to fix it. We’ve also tried setting up manually and it just does the same thing. Locks up/grays-out.

It is assigned to a new interface not used, and the IP block is also only assigned to that interface.

I have got this problem also.
Coud you make support if ?
Could you fix it ?
Take a look on my movie.
https://www.youtube.com/watch?v=zY_COR92f0c

My friend Second router with bgp with this problem.
https://www.youtube.com/watch?v=uhkxLCwBQLk&feature=youtu.be