Got a pop up on Garmin Express saying that my activity memory is about full and I should delete some older activities. I looked up how to delete older activities and it seems as though it is only possible to do so on a PC with a 245 music. I only have a Mac and it won't recognize my Garmin as a storage devise, so I am unable to follow their listed instructions. Is there any other way to delete older activities via a Mac with a 245 music?