There should be a phone number on that can. I would call them and ask is it an adhesive that says it is permanent when dry? Hopefully the company can tell you how to remove it. That is really unfortunate
did it become ( crunchy) after you washed it? You might have no choice but to remove the backing and batting and replace them. Grandma’s Spot Remover or Quilt Wash might help with the top after replacing the backing and batting