you probably have to same problems as mine. Chances are you have the tool in far enough but the filter is stuck to rust on the line like mine was. I had to unclip the push ones and then pull like a mad man to get the filter off the line.
The push clips act up aswell and i've broken more than a couple over time. All you can do is push them in, maybe try some brake clean to clean any dirt out. Your can't buy the clips by themselves so try not to break them. If you do brake them you may be able to use a cable tie. I've had to on a trailblazer and it worked great
2009 Ford Escape Limited - 3.0L, 6 speed auto, 4x4, 25/33 city/hwy imp mpg.
2017 F150 XLT-XTR - 5.0L, 4x4, 3.55's, E-locker, xtr chrome package, fx4 off-road package.
20/25 imp mpg