Thanks a lot for your suggestion and we will update the translation accordingly for the App and Web versions.
If you create a program or restriction, Netro will strictly follow the watering time and duration, however, preferences will not. Netro will try to water during your preferred time. However, if Netro believes your watering is not enough, it will still water your zones regardless of your preferred watering time.
If you have any questions or concerns regarding product usage, feel free to contact our customer support team(firstname.lastname@example.org) for assistance.