If you click on Discover in the top menu and the search map is blank when the page loads, most likely your location services are turned off on your computer or web browser preventing the host map from populating for your current location.

To verify this is the case, please perform a search using the search box features at the top left of the Host map. If the Host map shows appropriate Hosts as results for your search, your location services are turned off.

Here are some links to help you resolve this issue. Be sure Location Service are turned on for both your operating system and web browser.