This is from their forum in reference to that same question;
"Having a 9H coating like this on paint can sometimes require wet sanding the coating off, so that is why we chose an easier-to-work-with coating for the painted body panels of the vehicle"
With that said other coatings have a 9H...
You can try using some distilled vinegar, white vinegar and distilled water mix or a cleaner wax. If that doesnt take it off and its etched the paint, its going to need a compound/polish. Any of those will take of your wax/sealant, so it will need it be reapplied.
Wash in the evening or morning if you can to avoid direct sun. While washing use a foam gun/foam cannon and any decent quality soap (I like optimum car wash/adams/CG Mr Pink) and spray down the car, the soap will help prevent water spots while washing the car doing the 2 bucket method. If you...
Water pressure, whatever cleaning mitt/pad you use, to get in the little non drilled out parts use a lug nut brush/paint brush or maybe even a little wheel whoolie could work.
Orange pad will give you more cut for removing defects with just a polish and you can just skip the compounding part (if the defects are not real bad i.e. just removing light swirls and scratches). It will still finish down like a polish with an Orange pad. You always want to start with the...
Wash it > clay > compound/polish > IPA/cleaner wipe down > sealant > then if you want wax.
If its just light swirls/scratches you can probably just use a polish like Megs M205 or HD Polish. If you need a heavier cut get some M105 or HD Cut or equivalent. A couple Orange lake country pads...
http://adamspolishes.com/shop/specials/sub-category-1/adam-s-ultra-plush-drying-towel.html
or
http://www.autogeek.net/griots-garage-pfm-drying-towel.html
Always discount codes for both sites.
Larry of AMMONYC is an awesome guy, his youtube videos are great and hes very helpful if you email him with questions. All of the Ammo stuff is great, but some of it is overpriced, the benefit is the layering and they all work together. My personal favorites are Hydrate and Mud.