Because the video does not show the screens very clearly, this post contains some screenshots.
On the left side you see the main screen when the status is ‘not parked’, on the right side you see a shot of the screen just after the ‘start parking’ button has been hit. The status is changed, a progress bar keeps running as an indication that you are currently paying for parking. Also the system notifies you that a text (SMS) has been sent and shows the exact contents of it.
The following screens show some details relating to bookmarking zone codes. Left side shows a bookmark in progress, right side shows the bookmark picker.
The following shot shows a preferences dialogue which allows you to set the SMS parking provider you are subscribed to.