Desperate paint adherance problem

You don't say what you are painting over.

Existing paint? High gloss?

PVA is a drywall primer.

like 3rd eye said not enough info , you are missin sumthun,,, mam , but i done near 2000000 yr in quality shiee in chgo an never heard that one yo got a problem mam looks like lotta graaase . scrape er off first nothin siicks to er greaase not even bugs.....er roaches.......

I suggest that you paint the entire room with flat oil based paint first. That will seal all the problems and allow bonding for the acrylic paint. It works for me and I was painting for 25 years

Is the stuff you are putting on water washable? As in, water soluble even after drying? What does the label tell you to do? Prime over bare plaster? What is name of the product? Was there paint under the wallpaper? Did you wash AND rinse after removing the wallpaper? Tell us more. What temp does the label tell you is tolerable range for the product? What is temp of the room?

Sounds like you didn't get ALL the wallpaper paste off, this stuff WILL cause the paint to peel, if not right away, than some time down the road..

-- "Shut up and keep diggen" Jerry