[oem4me]

Too many variables to pinpoint the exact cause here, but if you want to try again using what you already have, sand and scuff it back to tight paint, make absolutely sure it's clean, and start priming with very light coats. Go super light on your passes (as in almost dry) and let it totally flash off between coats.
A neat trick with rattle can paints is to first heat the paint in the can with a heat gun or really hot water. Heat usually loosens up the paint making it more fluid and also increases can pressure to some degree, thus creating a finer spray.
The idea here is to prevent wet solvents from heavy coats from penetrating previous coats and lifting. If you successfully build a base of primer and color without any lifting, you might get lucky and get your clear coat on without issue.
It's worth a shot, anyway.