We live on a hill and park to unhitch facing up the hill. This leaves the hitch extended.
I use the mover to firstly stop the caravan rolling backwards but also I always move the van slightly forewords to compress the hitch very slightly. This, I find, helps the coupling come apart as the pads and ball are suitably aligned with no untoward pressure in either direction.
However, this has no influence on the power required to lift the handle of the hitch that I've noticed. I doubt parking on a slope is the culprit Beachball.
Having said that you might like to try moving the van or car as Raywood has suggested. Certainly worth trying.
You said earlier "Hi otherclive to put my stabliser on to my car i have sit on it for it to click and the green light comes up is suppose to be like that "
I presume you mean the green plastic marker that indicated proper engagement and not the green light that shows your ATC is connected and set?
As others have said you really should have strong resistance to indicate the pads are doing their job. The interesting thing is has this been a problem in the past or just recently?
Just to make you smile. Many many years ago we met an Irishman and his family in the South of France. He was the most "happy go lucky" man you could imagine. A pleasure to be with but I often scratched my head listening to his views on life. His motto seemed to be "Ah, for sure. If it's not ready today it might be tomorrow!"
He always collected a few of us to help him unhitch. The fist time I saw him arrive the outfit was "V" shaped. But with the hitch up and not down. He had loaded his van with practically everything, including awning, in his end washroom. How he ever managed to tow from Ireland still remains a mystery.
He did, however, have one of the old "leaf" type stabilisers on. I almost said fitted. Many here will remember the Scott and similar versions.
I was amazed to find the I could lift the leaf from its location and pull it to one side with absolutely no effort. It was simply resting there.
"Ah, to be sure", said Eamon, "I always taught it had to be like tat!"
Having your stabiliser tight Beachball, is a far better place to be than where dear Eamon's was!