Ring doorbell and chime stopped responding and won't rest

I noticed this weekend that my Ring Doorbell was no longer responding and assumed battery flat.  I put the doorbell on charge but rather than a rotating light the front light stays permanently on.  I have left the doorbell charge for over 24 hours but the device is not contactable.    I have also left the device off power and the front light remains illuminated so I assume battery is working but not contactable.  Pressing the reset button has little effect,  after 5 secs or so the lights go off but then immediately permanently on once releasing the reset switch. Whilst diagnosing I also noticed my ring chime is also showing as uncontactable,  when looking at the device there are no lights, and when I power on/off the blue light comes on for less than a second then goes off too.   Pressing the reset button also has no effect :-(     I have checked wifi and router and can see no issues. It strange both are not responding to resets either. I  am wondering might they have received an update an both become bricked ? :-( Any help or advice appreciated  Andy