4411 is the fastest, but not the only way to obtain a valid parking ticket. Doesn't the app work or do you not have an internet connection? Then you can start a session by SMS. If there is a malfunction at the provider, which means that texting does not work, you have to buy a ticket at the parking meter. We cannot intervene in any fines in the event of a malfunction, a valid parking ticket must always be present.
