Cosma Beef & Chicken Dry Food

So far, my cats have loved the food! I was happy to have found a dry food with a high meat content. Easy to chew, smells great, everything was perfect. Last week I opened a new pack, but apparently something has changed?! Both cats are much less keen on eating it, and it smells different too. I still had some from the old pack, put it out for comparison, and it was eaten straight away. Really a shame, I'm still unsure whether I'll give it another try...