CDXGeodata API calls which use Bing Maps such as GeoRoute or GeoLocate require a Bing Maps key. This key must be entered in your online geodata.cdxtech.com account in the "Settings" section. Log into this site using your username and assigned CDXGeodata API key.
API keys to be able to access Bing Maps are available online at bingmapsportal.com. Here is a video on how to get a free Bing Maps key.
How to get a Free Bing Maps License Key