Bests & Worsts Reviews from Amazon

We used the filter for four months. It has become so clogged, it is basically unusable. In fact, we had to apply so much pressure that we may have warped our aeropress. We tried various cleaning approaches, such as using blue dawn, to remove the coffee grinds. However, we can't clean it enough for use. We've sent three emails to claim the warranty, but Altura hasn't responded.