Module defaults back to Stuttgart Hauptbf

[m-knecht]

Hi,
first of all, many thanks for this quite nice module. Now to the issue which I am currently facing: The station_id is set to 'de:081118:5500'. All departures are retrieved from the API and displayed as expected. However it defaults back to 'de:08111:6112' for a few seconds and displays the corresponding departures. A few seconds later it switches back to 5500 and so on.
When running in server mode, I get "TypeError: delay is undefined" related to MMM-vvsDeparture.js:111:8 (see snapshot). Happy to provide further details. My first assumption is that this is related to the some default settings of the server behind the API. Any ideas, in which direction I should start looking at?