Carefully unbend the lip at the outside edge of the soffit. Pull the few nails that are holding it in and take out the couple of pieces and see what's causing it to buckle. If its vinyl, it should straighten out. There should be a piece of channel above the window that the soffit slides into. I'm guessing the soffit popped out of the channel when you had the windstorm. Or maybe when the window guys did their work they didn't put a piece of channel back in above the window. At any rate, glue is not going to do it. Take it apart and find the problem. Should be a simple repair at that point.
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