I've been using my Garmin Forerunner 35 regularly for walks and runs but when I've got home my watch has said one number for step count but the app has said another!! Is there anything I can do to fix this?! I've tried uninstalling the app and reinstalling the app to my phone, turning my watch on and off which then matches up to the app but wopes the steps I've done before and reset my watch!! Thank you