Charge 5 that keeps flashing Fitbit icon every 3-4 seconds after numerous attempts at rebooting

[Retiredinetown]

Have had Fitbit Charge 5 for a little over a year, it stopped working. Have attempted to restart Fitbit several times. The Fitbit logo keeps flashing every couple of seconds. Unresponsive to everything I do. What next? Attempting to resync to my iPhone XS.

Moderator edit: format

[DavideFitbit]

Hi, welcome to the Fitbit Community forums, @Retiredinetown.  

I appreciate the information provided about this inconvenience with the Charge 5 and the display being stuck with the Fitbit logo. 

Before considering other options, please make sure that you've exhausted the troubleshooting options listed here below and let me know if the issue persists:  

1. Complete the 3 pulse restart procedure using the charging cable. 
2. Follow these steps in case you're having trouble to charge your device. 
3. Please sync your device in the Fitbit app by tapping your profile picture > Charge 5 > Sync Now.
4. If you  can't sync, tap on your profile picture > Charge 5 > Tile to see if a firmware banner appears and complete any update if needed. 
5. If it's still unresponsive, please try changing the clock face as well and check if you're able to see anything on the display. 

There's also a different combination of steps that could be helpful with this problem; 

1. Hold on the button (or charging cable button) until you see the Fitbit Logo blinking (up to 15 seconds)
2. When you see the screen blinking, release the button, wait 1-2 seconds and then hold the button again until you see the circle screen (up to 5 seconds).

[Retiredinetown]

Did all steps, still no response