Fitbit Charge 3?

I have a Fitbit Charge 3 since the end of last year.

Now I have the problem that she has some damage since about February…

If it is not connected to the power cable, which is connected to the laptop, then nothing happens when you press the "button" to interact with the device.

A reboot has brought nothing as little as a "long" reboot.

I've already let the battery go completely empty and fully charged again…

But as soon as you take the device from the power it goes out and is also no longer able to get…

So can anyone tell me if the device is already over or can you do something else there?

Guarantee is already expired long ago…

Since the end of last year and warranty already expired?