Cat foiled the feeder in 10 days

Happily had this product for a year or so the cats could eat as they wished without the dog polishing off their food. Dog learnt to intimidate one cat into moving away but we changed it to the shortest closing setting and problem solved. Then DISASTER new adult cat in the home, in less than a week he worked out he could just use is claws to pull the lid off forwards and off to eat the contents. Product now of no use to us :(