Connect Tableau and KoBoToolbox
I see that Kobol offers a REST API. Thus, one could create WebDataConnector to fetch the data in Tableau. If that's an overkill, you could write a script in e.g. Python which extracts the data from the REST API and creates a csv file. 

REST API
http://support.kobotoolbox.org/en/articles/592398-api-and-rest-services

REST API -> Tableau
https://www.youtube.com/watch?v=1y5LsqQd00s&amp;list=WL&amp;index=2&amp;t=0s