Old Ice Maker Wires are stuck to inside of refridgerator

My icemaker is broken and so I bought a new one on this website. I’m trying to install it and got the old icemaker off except the old wiring harness is completely stuck to the wall of the freezer. It’s a white sticky pad with the wires coming out of it and I can’t seem to get it off the wall of the freezer to plug in the new wires. Any suggestions???