What body panel is it? I just went through this 3 weeks ago on a new car I bought. I told them I would not accept a respray and would only be happy if they swapped the bumper cover with another unit they had.
When I first got one I had poor results too, I was using car wash soap as a lube. I then mixed up some ONR as lube and it worked like it was supposed to.
3D might be having a issue with their manufacturer. On 12-21 Ray(from the other site) told me 3D told him 2 weeks and looking at another online retailer they are about to run out too.
They may have I just didn't see it. As the camera records a new segment it deletes oldest and when that video was pulled they had already had my truck for 2 weeks. Who knows what other adventures my truck was used for.
I have a Mini801. Shortly after installing it while my truck was at the dealer for service, I found out their shop foreman used my truck to go and pick up another employee from the hospital.
https://www.youtube.com/watch?v=OjXSqwGzjVM
I won white wax in a contest and used it once on my white truck, I didn't notice any difference in how the paint looked and it was a major PIA to remove.