Very frustrated with my 830! I've removed and reinstalled the app, followed to a tee the instructions ... and still cannot get it to download my rides. When I press the sync button on the app it tells me my device is busy - WTF! I can't find any advice on this topic and now looking to move away from our multitude of Garmin devices as coming close to having enough! Any last ditch efforts to help out would be appreciated as have 12k kms of data stored on this thing.