I have a 405CX and it has uploaded to the Training Centre application and Garmin connect for many years without any problems. When I tried recently to upload a number of runs it stated that the data had already been uploaded. Despite that message, the last data shown pre-dates several runs that I have logged and tried to upload since (they are on the Garmin watch). It's the same probllem when I try an upload to the Training Centre application. Any ideas why I have a problem, has something changed recently that might explain my problem?
I'd be grateful for any suggestions.
Regards
John