Hello, welcome to the hobby. For starters, the pledge stuff, or whatever they are calling it now, is crap. It used to be "future floor polish" back in the day and offered a rock hard acrylic gloss surface, conducive to scale modeling. It seems that over the years they have somehow managed to change the formula and now it won't cure. I suggest you switch to something that is designed for modeling. I use Tamiya X-22 clear cut with Mr leveling thinner, abour 50/50. Alclad clear gloss is another popular one. They make an enamel or acrylic based one, depending on your needs. Reference the Gull Grey, that sounds like a paint adherence issue if it's peeling. Make sure your washing your parts before painting to remove mold release residue.
The good news is you can still use that pledge on your floors if you'd like. Good luck.