Air bubbles! I read a review from a buyer who complained of air bubbles under the wallpaper and I liked the paper so much that I told myself it was probably their installation. Unfortunately I am having the same issue. I have a lot of experience installing peel and stick wallpaper. My install looked amazing and I was happy with the look. UNTIL, the next day and every day since there are air bubbles forming. Literally every day there are new ones. I tried poking pinholes to release the air but soon the wall will look like swiss cheese. Not sure what to do....