We automatically pull all information about venue's (name, location, categories) from Foursquare. If you are noticing an error in this information on Untappd, it will first need to be changed in Foursquare.
You can access a venue's corresponding Foursquare page by selecting the Foursquare logo on the Untappd venue page. Once on the Foursquare page you can "Suggest an edit."
If you notice the information hasn't updated, you can reach out to us and let us know and we can submit an edit as well. The more submissions Foursquare gets the more likely they are to approve an edit.