You have removed the wraps all at once, which means your Shellac will start to go hard again, so as Nailsinlondon1 has suggested, remove them one at a time and make sure you start with the one you wrapped first.
It really helps if you press the nail firmly while the wrap is on and twist from left to right and pull the wrap off the nail. I find this usually takes the Shellac clean off the nail... you may need to flake a tiny bit off.
Your application may be a bit too thick, so go thinner and as already said, make sure those wraps are nice and tight otherwise the acetone will evaporate and the Shellac will harden, making removal a LOT longer than it should be.
It should only take 10 minutes to remove a full set... by the time you finish wrapping, the first one should be nearly ready to come off.
HTHs