ZWO ASI 178MC Planetary Camera Review and compatibility issues!

I picked up this ZWO imaging camera and unfortunately I had to return this camera because with my Celestron C8-N Telescope I was not able to achieve focus what so ever. I tried attaching the camera directly using their 1.25 nose piece which was actually about a 1.26(7) and could not achieve focus. I tried to use a barlow lens and attach that to the 1.25 nose piece and had to end up using my nose piece adapter because my barlow lens would not go onto it. Still was not able to achieve focus. I then used my two inch eyepiece adapter and still no luck. I finally tried my extension tubes with hopes I could get a focus but nothing. After trying to get some feed back from ZWO they were literally no help and decided to return it for a full refund. It is disappointing for something that cost 369.00!