They say you have a month to try this app and you can cancel your subscription anytime you want. Well I did it immediately because I realized very soon that their material didn't interest me, but the button to cancel your subscription, takes you in another page and you think they won't take your money, but that's wrong because the only way to stop them is by removing them from paypal or changing your credit card.
Hi Cristiano - When you cancel your subscription with us, you will immediately receive a confirmation email of the cancellation to your primary email address on file. If you did not receive this confirmation email from us, then the subscription cancellation was not completed by you. We make this very clear in our cancellation guide, found here: https://support.scribd.com/hc/en-us/articles/210134046-How-to-cancel-your-premium-membership
Please reach out to our support team at help@scribd.com and we'd be happy to get this resolved for you ASAP. Thanks!