Wunderground API URL format

When I set my Wunderground Station and API key in the ‘Automatic Uploads’ the ‘Test’ button returns a ‘Service Unavailable’ error. The URL that is sent is:
http://api.wunderground.com/api/{32 bit api}/conditions/q/pws:{StationID}.json

However when I send the following format URL:
https://api.weather.com/v2/pws/observations/current?stationId={StationID}&format=json&units=m&apiKey={32 bit API key}

it returns the correct JSON data.

Solved - should have read the manual!

Needed to Enable the ‘PWS API’ option