Not have automatic service renewal

Service renewals must be expressly authorized immediately prior to the charge–not at the time of the initial suscription–since conditions may change at initial suscription.

thank´s

Please elaborate what you mean and I can move it to feature requests.
Currently your request is without substantial information

The app does not allow “Canceling susbscriptions” ab error yet to be fixed.

Apparently the “app” is the QNAP cloudstorage subscription you are talking about.