Doesn’t stick to warped walls for more than 3 days. ‍♀️ We discovered our walls are not even close to flush when we put  this up. 
Easy install. Looks amazing. Did a whole large wall in just 2 hours including unboxing and clean up.  
We did end up using screws to hold the panels on because of our drywall issue. They have curved to mask the warped parts of the wall. Unexpected. Impressed.