Starting yesterday (4/7/2014), I've been unable to login to Garmin Connect with my Yahoo account. I signed up for Garmin Connect using Yahoo authentication. Is the site undergoing maintenance? It's been more than 24 hours.
When I click the login with yahoo icon, a pop-up shows with this message from Yahoo: "Sorry! There is an error with the request we received from the website you are trying to use. Please try again in a few minutes. If this error persists please contact the site administrator."
I've tried this from a few different machines (Windows 7, MacBook and iPad). Same error each time.