The original white wall has a chalky feel to it, it has no shine, and if you rub your fingers across it you will find a white powdery tint left behind on your fingers. When I painted the second time I painted I've the previous peeling paint and the original wall. It didn't peel off the previous paint, but it only peeled off the white paint. How can I paint over this or fix it? I have no idea what to do.