Well typically #9 should work well with that pad on a rotary. #3 is just a pure polish and really has no cleaning abilities.
Some paints simply don't work well with certain pads, polishes, and tools. My car is one of them. Certain polishes when applied with the rotary will generate heat immediately, even at speeds of 600 rpms, and the polish gums up and I get pad squeal. I have found a few polishes that will work on my car with a rotary, but changing over to the DA allowed me to use a lot of the polishes that wouldn't work on the rotary. Something about the random orbit motion of the DA polishers seems to make a big difference.
A few things you can try.
First try wiping over the area with some IPA to make sure there is no previous wax/sealant still on the car. Sometimes this can make polishing difficult.
If that doesn't seem to help then I think it's time to try a different polish or different tool.
Do you have any local paint and body shop supply stores around you?