My Charge 3 has a black screen

[nephilione]

when i charge my charge 3, the screen does not startup. I tried many steps like {

Hi everyone! Please also make sure that your tracker is not on Sleep mode and try the long restart:

1. Connect the device to the charging cable. 
2. While the device is plugged into the charging cable, press and hold the button down for 15 seconds. 
3. The device turns on and shows a battery icon. Two vibrations occur: first a short vibration, then a medium vibration. 
4. The device turns off.
5. The device turns on and shows a progress bar and short vibrations occur. The progress bar completes. Note: A total of 7 short vibrations occur. 
6. Remove the device from the charging cable. The device shuts down.
7. Important: Plug the device into the charging cable again. }

but anything does not happen. I click the side key it vibrates only, When I tried to hold the key for 8 sec or more than 8seconds, it vibrated for that duration nonstop. 
KIndly help..Screen is black

Moderator edit: updated subject for clarity

[EdsonFitbit]

It's great to see you in the Fitbit Community, @nephilione.

I'm sorry to hear about the difficulties you experienced with your Fitbit Charge 3. Thank you for trying to get them resolved before contacting us.

In addition to the regular restart and long restart you can change the clock face of your Tracker:

• From the Today tab in the Fitbit app, tap your profile picture > Charge 3
  tile.
• Tap Clock Faces.
• Browse the available clock faces. Tap a clock face to see a detailed view.
• Tap Install to add the clock face to Charge 3.

If you followed the instructions shared above without luck, the best way to get help for this problem is to chat with us online or give us a call. Please click here to get connected.

Have a nice day.

[nephilione]

I actually lost my phone, that's why didn't use the tracker for 2months. After I bought my new phone, I tried to connect and that time I faced that issue. I don't have the warranty but I am willing to pay for the watch to repair.

[EdsonFitbit]

Thanks for your response, @nephilione.

I'm sorry to hear about your lost phone.

Currently, there are not reparation centers to fix Fitbit products. The best way to get help for this problem is to contact Customer Support.

Have a nice day.