Geeetech

So I’ve recently had an extruding problem which I seem to have finally overcome. I have now found however my prints are starting to warp after my around layer 3, I’m using a brim & the first few layers are fine before it starts to lift. I’m using hairspray (lots of it) on my super plate which originally was fine but not now. When I’ve cleaned my super plate using DAW software just hot water it seems that the coating is coming off. Is this normal? I’ve ordered some rubbing alcohol to give it a proper clean & also some 3DLac to stop the warping but just wondering if I’ve done something wrong or perhaps a faulty plate? It seems some use nothing on the super plate and others just hairspray or glue stick. Not sure why this is suddenly happening.

Thanks