Was using cleaner wax today...
Hard to tell what's really going on without seeing it in person, but if you applied the same product in the same way to the whole car and this was the only area to have an issue, then it's not from any "build up" or other problem with the product itself, the problem must be with that section of paint and how it responded to the product. You could try washing the area with (good quality) dish soap and a soft cloth/sponge just to make sure you've removed all residue and then re-evaluate. If there is still previous residue on the surface, then anything else you apply in an attempt to "restore" the paint will be less effective.
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You want to start out with the least aggressive pad & product to achieve a satisfactory finish. After claying a dual action buffer with a medium cut polishing pad is a good place to start. I'm guessing you probably don't have any professional products on the shelf??? If so I'd start with Meguiars Ultimate Compound which can be purchased off the shelf at Autozone, Walmart etc. The Ultimate has about the same cut as Meguires M205 so it's not that aggressive plus it finishes down very well. If that brings back the gloss and you feel the need to squeeze out a little more... finish with their Ultimate Polish.
I tend to use other polishes as my "go to" but those two mentioned above are always on my detail cart












