Just a heads-up. Both the Office 365 and Strava connections were severed after the Connect mobile software for iOS was update on Tuesday, February 9. You have to connect them again.
I've gotten the Office 365 reconnected, but having issues with Strava.
UPDATE: OK...just a quick update. I was able to get the Strava connection back -- but I had to go to Strava's web site, disconnect Garmin there and then reconnect. After doing that, the connection showed reestablished in the Connect mobile app.