I have the same problem. I've tried using USB, or through rekordbox. I see the beatgrid there, but when I try to hold the rotary button, or press and hold the grid button nothing happens.
As I mentioned, the beatgrid is there and the quantize works, but I'd like to be able to adjust the grid if I needed to without going back into the software.
Current version is 1.17 as well. We're you able to get your issue sorted out?