The Download button does not work.

When the Descargar button is clicked, the browser identifies it as a calendar link and gives it to a calendar application for processing. In order for this to work, the browser must recognize the webcal:// protocol.

Most browsers work fine. However, Android devices do not support it natively. This leaves two options:

• Install the free application ICSx⁵, which will provide support for webcal:// links. For more details, see Subscribing to a calendar on Android with ICSx⁵.
• Use Google Calendar. From the menu beside the Descargar button, select Añadir a Google Calendar. This will add the calendar subscription to your Google Calendar accunt. From there it'll be automatically synchronized to each device using the same account. For more details, see Subscribing to a calendar on Android with Google Calendar.