Water hose

I went to use my brand new Camco water hose...not the cheap white one, but the more expensive blue one. The fittings on each end leak. Am I doing something wrong or is this common? Don't know how I can screw it up, haha. I tried connecting it to various things and it still leaks. The one at the spigot isn't too bad if I use a wrench to tighten it, but the one on the RV side is pretty bad. Maybe too much pressure? I'm using a pressure regulator, but I think its 45 or 50 psi...maybe too high?

Unfortunately, I missed the window for being able to return it. That's what I get for buying everything I need way in advance...