I have tried on several devices, PC, iPad & iPhone, using various browsers and all I get is "Sorry, the upload failed. Please try it again."
It's not unusual to experience this kind of broblem with Garmin Connect but that doesn't stop it being very irritating. (I'd love to be the person in charge of developing this service, 'coz it doesn't involve a lot of effort. I actually think my nan could do a better job, and she's dead! Rant over.)
Does anyone know how to get round this problem?