looks like it hasn't completed drying....do I see water bubbles in that tint? If it was smooth before and then just started now...then something mechanical is catching it and pulling it away from the window, then it rains, and water gets in that crease and works its way down. If you paid some place to do it, take it back. Could be film failure because by 11 months, you should be OK. You might be able to pull that bottom piece from the corner back enough to the wrinkle and then lay it down again while squeezing the water out.