App Doesn't Sync!!

The Misfit Flash is great...when you can sync it. When I had windows 8.1, 60% of the time was able to sync my flash with this app. Occasionally, even though my flash would say I did all of my points for the day, none of my steps would sync (it would say 0 steps or sleep, even if the sync was successful). Eventually, I learned how to reset the app at specific times of the syncing process to get it to display my data. Now that I have Windows 10, NOTHING WORKS. I can never get it to sync, as it always fails. After first installing the app, it synced like once or twice, but nothing was recorded. And now, it never syncs. This app is GARBAGE. It barely worked on Windows 8.1, and now doesn't work at all on Windows 10. I recommend making sure the product works with your phone before having to rely on such a poorly designed app. The developers could update the app to fix these issues, but I have never received an update in the 6 months of having this app.Obviously, they don't care!!