I recently had this issue with my Feelworld LUT7s being completely green. I contacted Feelworld and they eventually sent me a firmware update that I could install and it seems to have relieved the issue.
My Feelworld 6PLUS did not have this issue, and even when I plugged in that to the camera and used the loop-through out to the LUT7s I was having this trouble. So I wasn’t under the impression that it was a kinefinity issue. As mentioned, contacting Feelworld was the way for me to fix. I would suggest contacting Atomos and seeing if they can do the same. Make sure you have the most current firmware just in case.
If this is a Kinefinity issue I hope they work with these companies to figure out what the problem is.