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1. While the device reliably and instantly monitors heart rate with no lag, unlike other monitors, the device has a horribly hard time connecting to IT'S OWN APP!!! I use a Tonal for my workouts and the device connects to this every time, without issue.

2. What's the point of using them watch and the app when your data doesn't even sync properly for you to analyze the data!?! Also, the watch button gets stuck all the time and it is so hard to get it back out.

3. I find soaking the plastic holder in hot water and then squeezing the plastic wings together reconfigures it to properly hold the sensor so I don't have to pay $17.95 for a new armband.Doesn't sync up my workouts.

4. Worked great initially, 3 watches replaced in 10 months! Now Privacy update opens data to all countries storage and sharing!Definitely geared toward their smartwatches, but useful for my Verity Sense HRM.

5. The app is so much worse than the Garmin one, at least that sync my data everytime, I just didn't like the info on it and it wasn't simple to use.

6. If the app had a better UI and connectivity with the device I would definitely recommend the product, until then, no way.I have rarely used an app that's as poorly designed, non-intuitive, unpredictable UI-wise, with such a 2007 aesthetic (not in a good way).

7. I clearly see the workouts on my Unite watch but when I try to sync it, it only sync the last 2 workouts.

8. And yes, the app is up to date on my phone.I had a syncing issue with my sleep data.

9. Either I can't change my sport profiles or communication issues where my sleep or workouts won't load onto the app.

10. When I switched the default back to Chrome, the sync started working again.

11. Leave you to figure it out or move past the issue,, now NOTHIN! No real guidance on warranty Support, when issue worsens.

1. Fix Polar Flow Not Working/Crashes/Errors/Unresponsive & Black/White screen:

1. Restart Polar Flow: Restarting the app will resolve most errors.
2. Update the Polar Flow App. Here is how:
   1. On Android goto PlayStore » Search for "Polar Flow" » Open Polar Flow » click "Update".
   2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Polar Flow » click "UPDATE".
3. Clear Polar Flow app cache: Clearing cached data will force your app to retrieve the latest data directly from Polar Flow servers.
   1. On Android, goto Settings » Apps » Select "Polar Flow" » click Storage » click "Clear Cache".
4. Check Polar Flow app permissions. If any of these permissions required to use your device's features are disenabled, Polar Flow might not work.
5. Uninstall and reinstall Polar Flow. If nothing else has worked, completely uninstall Polar Flow then reinstall.
6. Restart your device. Last, restarting your device can often clear most problems causing Polar Flow not working

2. Fix Polar Flow Server issues & Internet Connection

1. Check network connection: An unstable Internet will make Polar Flow be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
2. Disable VPN: VPN can cause connection errors and lead to Polar Flow not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, Polar Flow may not be able to connect to the Internet when running in the background.