Telefly osd issue 1

Telefly osd from FlyMyDream Antenna tracker. I am having a number of issues: 1 no fpv video passes through the osd to the vtx. 2) the gps data does not display. 3) the osd unit gets really hot (melted the shrink wrap on the back. The LED blinks faster as it gets hotter until the screen blacks out. when it cools the osd screen resets and returns.