Hint App Needs to Refund My PayPal and American Express Charges

I recently noticed several unauthorized charges related to the Hint app, even though I never subscribed to the service or provided any payment details directly to Hint. On 28 July and 1 August, small transactions of 1 USD each were charged via PayPal with the description “PAYPAL *HINT APP”. In addition, there is a pending payment of 48.99 USD on my American Express account via PayPal for “*HINT APP”. I did not knowingly start any subscription with Hint, did not consent to these payments, and have not received any product or service from Hint in return. The Hint app was only opened once to have a look, and when a payment screen appeared I chose to exit instead of subscribing. Despite this, these amounts have been charged or attempted through my American Express card via PayPal. This situation is very worrying for me because it indicates that payments are being taken without my clear consent. I request that all charges related to Hint app that have been taken or are pending via PayPal and my American Express card be fully refunded, that any existing subscription be immediately cancelled, and that my Hint account be permanently deleted so that no further charges can be made.