I've been tracking my hiking and cycling activities on Garmin Connect.
Several months ago, I helped my brother to update an older Garmin device and remove files to free up memory. Now it appears there are a bunch of activities on my account that I wasn't involved with. They appear to be from my brother's device.
I'm not sure how this happened or how I can prevent it, but at this point I'd like to delete every activity for his device.
Is this possible?
Note: If I need to become a Python developer for this, that's not really satisfactory. However, I am a C#/.NET developer.