You may have an issue with the Rovelight but have you ruled out your radio triggers? A few pages back you posted a picture with the Yongnuo 622 transmitter and a Rovelight so I am assuming that is what you are using for HSS. I have never been able to get my Rovelights to work in HSS with the YN622's (I have 3 622 transceivers and 1 transmitter). I have tried every configuration and followed the Flash Havoc article but nothing works. My Yongnuo YN-E3-RT/YNE3-RX combo works great as does my Phottix Odins and when using the Odins ODS timing I can pick up another full stop of flash Exposure when using HSS.