Opened up the box and attached my tablet, turned on the controller, turned on the AC. Screen lights up but says "disconnected". Controller has solid red light on and no beeping, AC lights are flashing searching for a connection. I tried to connect through the tablet but it still reads disconnected. I tried the C1 C2 video button at the same time and it beeps once but the light stays red and does not connect. What am I doing wrong?