Molfix Blue Package Diapers Caused Severe Nappy Rash For My 18-Month-Old Baby

We started using Molfix blue package diapers. Within 2 days, my 18-month-old baby's diaper area became nappy rash to the point of burning. He had never had a nappy rash in 18 months. We tried many brands and I was using Pure Soft because it was soft-textured. Trusting this (we said it was the same brand anyway) we bought 6 from the blue package. Unfortunately, I had to take him to the doctor. My child has been in pain for days and cannot sleep at night, there is no cream we have not used. Who is guilty of this, and who will be held accountable for this? What kind of substance is in it that this child has become like this? What kind of conscience is this? The situation we have fallen into financially and spiritually is obvious. We are waiting for a response. We will complain to all the necessary places.