Doorbell not charging when plugged into mains

I am trying to charge my battery operated doorbell and it’s not charging at all. I have followed the instructions given,
it is not lighting up, neither is it connecting to the wi-fi…does anyone know why it’s not working?

Most of the time mine is around 77% but when I first installed the mains I turned the doorbell to disarm and that worked for me.

Hi @user49646. I would recommend first fully charging the battery on your Doorbell using the USB charging cable and then setting it up. Once that is done, hardwire your Doorbell, and after a few days, check to see if it is being trickle charged with the hardwiring. Let me know how this works out for you.