I had this problem in Open beta but I found that there are a few keys that will not bind together.

Crtl Shift 0

I was unable to bind those keys together anywhere at all.

All of these did work how ever.

Crtl Shift ALT 0

ALT Shift 0

Shift 0


Also when I was making chat key binds I found that

Crtl Shift r (or) l

Cant not be found to linkshell back or Tell back. It opens up with the error that say you need to use at lest 2 keys for this binding.