The Garmin backend has been hit with ransomware the last couple of days. Apparently everything is all encrypted & disabled. That means no Garmin Connect, no mobile app & no uploading through either of those services to your favorite platform.
Many people do upload from their computer directly from their device to their favorite platform directly & bypass the Garmin backend completly. Perhaps that is why neither of you had noticed. You have been doing it "old‐school" since it was the "new-school."
The Garmin mobile app & Connect & Garmin backend really just automate the process of getting your ride to Strava.
Link to DC Rainmaker