Baby it's cold outside.
It's that time of year and buyers are reaching out with reports their decals are not releasing from the grid backing paper.
Vinyl decals don't like cold. The grid backing paper should release easily from the decal.
If it doesn't - warm it up!
Any heat souce will do.
A blow dryer, in the sun, a warm car, under lights, or near a heat vent.
I check every decal for release before it leaves my studio so I wouldn't send out a decal that won't release. Get your decal warmed up and you should be good to go!