In other words, there is still a residue showing that won't come off? You can try applying some dry treat on top of the residue to reactivate so that you can buff off. That is what the dry treat people suggested to us a while back when we had a similar problem. That worked ok. But then one of our guys tried a commercial stripper and that worked better. It was the next day so the stuff didn't have time to cure that long. I'm not sure about Stain Proof Original failing (in that it doesn't do what it is supposed to do-i.e resist stains) but it is easy to misapply it and leave a residue.
________________________________________
From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
15 West Highland Ave. Suite E
Philadelphia, PA 19118
Phone: 215-732-7505
Fax: 215-546-9160