My remote worked for the first few days (so I know how it’s supposed to work) and it’s been dead since.
You basically have to be in front of the camera (think ENG one person crew who must be on camera and have camera control). You need to turn IR on in the camera (every time you turn on camera as noted above).
Again that all worked for a bit for me but doesn’t work at all now. Either the battery is dead or there’s some other IR malfunction that people are going through. I hear a number of people having this issue but nobody seems overly wrought by it since the limitation of having to be in front of the camera renders it near useless except for one person ENG crews.