Resiblock sealer disaster

[agentcoops]

We had a new driveway installed with block paving and the installer immediately sealed it with Resiblock.

Some months later and the driveway looks absolutely horrendous which, after reading up online, is probably down to being applied too soon after laying and also being applied incorrectly; there are lots of dark patches suggesting it was over applied in certain areas.

My question is what can I use to strip the resiblock sealer?

[RAPressureWashing]

Which Resiblock product?
This isn't really a job that a homeowner/DIYer can do to be honest.