Glue that never dries??????

I just called Glue Devil Head office, I need to know the drying type of the Cornice adhesive, apparently it never dries!!!!!!, they guy “trying” to help me needed to phone me back so he could find out drying time!!!!!!!, he check the MSD something to check drying time, and he said there was nothing about drying time, so guess what guys, this “ glue devil cornice adhesive never dries!!!!!!!