Perhaps he just went out of order. At the moment, with so much information, I can only say this. By the way, it is still possible that the reason is that the teeth are simply dull. In general, finding a quality shredder is quite difficult and I spent a lot of time finding a reliable and quality shredder. And I was able to do this only thanks to the site with reviews for different models. There is [https://ladi6.com/inexpensive-paper-shredder/|a lot of detailed information about different shredders] and you can definitely find something suitable for you!