Seriously, use baking soda. It will NEVER scratch plastic, and it dissolves instantly in water. I dump out a little pile in a dish, dip a wet finger in it, and rub away on the spot. If it can be removed, this should do the job. You will have to do it over and over, but it will begin to combine with the glue and ball up a bit. Periodically you will need to clean off your finger and start over, but it WILL come off. You can also use a bit of damp rag, but I find a damp finger dipped in baking soda works better because I have more control. I can actually feel where it’s coming clean.
You can use baking soda to detail anything from toasters to microwaves. Once I had a toaster with metal sides, and the bread wrapper stuck to it, and melted all over the side. I thought I’d have to get a new toaster. I tried using a knife, but it only scratched it. Then I tried baking soda. Apparently the crystals from the soda worked their way under the melted plastic, and it came up like a dream. No scratches except for the ones I put on it with the knife.
It’s also handy to have an old tooth brush handy to get tiny areas. Dip the wet toothbrush in the soda and away you go! When finished everything will wipe up with a damp rag.