MjAMjAM pure meat pleasure 6 x 800 g

Hello, I have 3 cats at home who always got on well with MjamMjam. I was always very happy because the price is still affordable and the ingredients seemed absolutely fine. However, for the past few months, they've been getting severe diarrhoea and/or vomiting from the food every now and then (so far 3 times). It has only ever happened after eating this food and then went away again after 1-2 days. BUT, that can't be normal. That's definitely too often.