Sense won't pair

[aerdna16]

My fitbit Sense does not want to pair, it does not let me reset it and it asks me for a code on the watch, however it does not let me press any number

 

Moderator Edit: Clarified subject

[Jdsenter]

Sounds like the digitizer has failed, could be software, could be hardware, like internal cable disconnect or some liquid corroded/shorted the connection. If software try a hard reset, press side until reboot, stop pressing side, then press side until vibrates, this should force a full device wipe. If it responds, it was software, if it doesn't then it is a hardware issue. YMMV. 

If under warranty contact fitbit, they might swap it for another device. Fitbit considers the device a throw away, so they would recommend a replacement, if you contact them they might give you a discount on a future purchase, but they don't repair their devices.

If no longer under warranty, if it is a hardware issue, you can bring it to a cellular/watch repair shop they can remove the display and check the connection, they can even replace the display (if faulty).