Thank you for contacting us.
The image doesn't appear because you haven't set the ZoomLevel property of the RadMap. Basically, when you are using the UriImageProvider by design it require that you specify zoom level. In your case you can set to 10 for example:
. . . . . . . . . .
Give it a try and let me know if it works for you.
Telerik by Progress
Do you need help with upgrading your AJAX, WPF or WinForms project? Check the Telerik API Analyzer
and share your thoughts.