Unable to connect to Azure SQL database from a PC where SQL management studio can

Hi,

Just downloaded and installed Desktop PowerBI today.

After registering with PowerBI and starting the app, i tried to connect to an azure sql database i have, and it fails with the message

We couldn't authenticate with the credentials provided. Please try again.

I am able to connect with no problems from the same PC using SQL management studio perfectly well... So i can't figure out why PowerBi won't connect.

I assume when configuring the Azure SQL (there are three 'tabs' amd I am on the first tab titled Windows) that i am meant to be entering the SQL Login details here...

Very confused!!!