Rocketfish Bidirectional Mini Drop Amplifier (RF-G1179) Silver - New

Hi everyone. So I have this all hooked up, and it works great UNTIL I plug in the AC power. Then the red light lights up, and I lose all signal...

Will this work for optimum cable

Will this boost signal for satallite internet?

I hooked up my TVS and my Comcast coaxials. Everything works without the ac adaptor. What is the purpose of this adapter?