I took the gmat online, and had my score (710) placed under review. The only issue I can think of was my webcam was very small so it was easy to move out of frame when I was writing, but as I couldnt see what my webcam was capturing, it was mostly my proctor telling me to move backwards/rightwards/etc.
As such, I'd like to know how likely it is for reviews like these to be rejected? I was told by the proctor a few times that he couldnt see me, but I always immediately moved back. The proctor didn't say anything about possibly revoking my test or warn me about that happening, but at one point they did have me re-scan my room.