Charge 2 display corrupted, not counting steps, outside warranty

[KimmieE]

My Charge 2 device has several black lines through the numbers on the screen so that I can no longer view the time or number of steps properly (the top and bottom of the step display has completely disappeared).

My FitBit is also not tracking my steps accurately (ex: I did a 30 minute treadmill walk and it counted 0 steps).

Lastly, it is no longer tracking calories burned as part of the exercise option (for calories it states "null").

I reset the device twice, deleted the app from my phone and re-downloaded it, restarted my phone several times, and called FitBit customer service for help. I was told that there is nothing they can do and that they don't stand behind their products beyond 365 days. I was also told that I had already called FitBit and had the device replaced with is simply not true.

Does anyone have any tips or is anyone experiencing similar issues? I love having a step counter but I am leaning towards switching to an Apple Watch or Garmin watch as at least those companies stand behind their products for longer than a year. 

Thanks in advance.

Moderator edit: updated subject for clarity

[AlvaroFitbit]

@KimmieE Welcome to the Fitbit Community! I hope you're doing well! Sorry for the delay in my reply.

Let me help you with your Charge 2 not working as it should and thank you for troubleshooting this issue with our Support team. When you used the treadmill do you grab the handrails? Your device will detect the movement on your arm and translate that movement into steps. There are situations in which your arm may be still but you could be moving or walking. This may happen when you are pushing a cart or holding bars while walking or doing treadmill. For added sensitivity you can try wearing your device on your dominant hand but select that hand as non dominant on the device’s settings to make it more sensitive to movement. Also make sure your hands are moving so the device can properly track your steps.

Where are you viewing your calories. If you are using the app the log out, restart your phone and log back in. If you are using a web browser then clear cache and cookies.

Finally regarding your screen you already tried the suggested troubleshoots. Support does follow the guidelines listed in the warranty so if your device is outside the warranty period they won't be able to replace it. Still thank you for sharing your feedback.

Let me know how it goes.