I had this problem with set of one industries "total bitch," it was. I would recommend you stick them down as soon as possible. I tried a few glues impact adhesive had no effect, spray glue made the stickers warp & wrinkle, some glues will melt the adhesive off & the print, super glue had little effect, the glue gun did work though, but can cause you to see the the glue underneath sticking up proud. good luck & stay away from glues that are flammable or have solvents in them.