My Charge 3 doesn't sync nor update

[MRCarneiro]

Synching my Fitbit charge 3 with my only paired system (phone) was always a challenge from day one, and extremely frustrating. 

I wanted to install the update but it is just undoable. I unpaired the Bluetooth from the phone, deleted the charge 3 from the app, uninstalled the app, reseted charge 3, deleted all user data from charge 3, I've done all of this away from other Bluetooth devices, and with Fitbit plugged and unplugged to the charger and still no luck. If I try for an hour, eventually I can get to 1% of the update with the Fitbit showing a horizontal line on the screen followed by an "X". Afterward current synching is again an extreme achievement if I don't repeat the mentioned steps. In addition, I bought it less than a year ago. This is the first product I have experienced with so many synching problems. Is this solvable?

Moderator edit: updated subject for clarity

[EdsonFitbit]

Welcome to the Fitbit Community @MRCarneiro.

I appreciate the steps tried prior to posting.

To evaluate this situation, I created a case with Customer Support. Please check your inbox on the next days. They will let you know how to proceed as soon as possible. Thank you for your patience while dealing with this situation.

If you have any question, please let us know.