It has been reported before. It was reported during the winter of 2014/15. The Korean manufacturer's report was dated February 2015. There was a very similar thread to this one at that time with problems of one particular batch. I was involved in this and was given loads of pots of strips by Home Health to do some comparison cross checking with my Accu Chek Mobile. (similar to what
@Rachox has been doing. ) I have always thought the Codefree was a bit dodgy, requiring too many double and triple tests, no matter which batch. In the end I gave up on it completely. I have continued to recommend it to newbies(along with the Tee2) simply because of the cost but have used my Accu Chek exclusively for the last 2 years .