There was a massive Amazon prime deal with the S20 bundle (w/3 CT10s) so there are probably a lot of us with this issue. Contacted Garmin and was told they are working on it, as it seems to be a bluetooth issue with the S20 and the app. All normal fixes have not worked for me including updating software, doing phone and watch resets and all the crazy things we normally do to fix pairing issues. Connects and uploads fine on PC. I am hopeful that Garmin will fix this soon and the issue will be taken care of, but figured I would post encase someone just got a new device and is having the same issues we are. We actually bought two cause the deal was so good and both sadly do not work. Well hope this info helps someone...run, walk, bike, swim, hike, golf..happy everyone!