I have been trying to upload some manual activities in Garmin Connect Modern and the only thing I get is the Twisting Blue Disc of Futility. This happens in both Safari and Chrome.
Same here, I have been trying to upload two activities using the 'manual activity' button and all I get is the spinning blue disc. I am using an iMac - very frustrating!
Add me to the list. I can edit the activity name & type, but cannot add mileage to a treadmill run nor can I edit the time zone (which auto-loads incorrectly every time.) GRRRR. I have tried on mobile, Chrome, and even an old Mac with Safari. "Edit activity" does not work in any case.
I'm also in the same boat, I completed a spinning class today wearing the HRM, but want to add my distance and average RPM in. I click on the pencil to edit the activity but nothing happens, I can change the name and activity type but nothing else. I've tried with Google Chrome and Firefox on a Mac and Windows and had both the same affect.