We are having all of our wood trim and doors in the house painted white. They were stained with a gloss in them. We hired the job out. He used PPG Pitt-glaze semi gloss. Didn’t see the prepping with my own eyes but he said he used a liquid sander on it prior to painting. It’s been curing for a week now but it has chips everywhere. If you pull on those chips it seems that air gets under it and it just will come off like paper. Not every place is like this, some spots I can’t even remove the paint with my nail digging very hard into it but others it will come off with my nail just barely gliding it over the surface of the paint. It’s says drying time 1 hr to touch, 4 hours to re-coat, 24 hours before normal use and 30 days to fully cure. Is this normal after 1 week?