Kattovit Diabetes/Weight Pouches 24 x 85g

My cats have been eating this food in the chicken and salmon varieties for 1.5 years because of diabetes. Since the last order in mid-August, neither of them will touch the chicken variety anymore. I have to throw away a full bowl every time. Has the recipe been changed? If so, why? It's a real shame, as the two rascals used to love it and really depend on it.