I am having the same problem on my lotus. I purchased the vehicle from an owner who didn't have a damn garage.... *face palm* It needed so much correction that I went to Adam's Detail and purchased over $800 worth of product.
I found a porter cable laying around at home so I went over it 3 times with each polish (sshr, shr, and fmp). Mine still has a lot of scratches (not too deep since I couldn't feel it on my finger nails) and I watched the videos over and over to make sure my technique was correct. The car does look a lot shinier and looks great until I put the light on it and still see some of the scratches left.
I think the first half of the car I was applying too much stuff, so I cut it down to one or two pea sized drops. It seemed to work a little better, but scratches would not disappear. I used 3 to spread it and 6 for the polishing.
One thing that I have a question is that the white pad seemed to be "shedding" bits and pieces like dust. Maybe it's the polish dusting, but when I looked at it closely it kind of looked like bits and pieces of foam lol. Is this normal?
I might try to wash the pads off and go over it again very slowly with a ton of pressure... or might just pick up a flex.
Edit: Just bought a flex lol