I've read reviews of this model before with similar problems. The manufacturer there assured that the percentage of defective filters is small, and the batch has long been sold to shops in the regions, so "sorry, sorry, we'll fix everything." But my filter was produced on 03/03/2022! And ordered on the corporate website in Hong Kong! That is, Aquaphor continues to produce defective filters, take money for them, and then just say "WAIT" and "WE DO NOT REFUSE REPAIR" and the coolest thing "URGENT See full review