OK... so it's that time of the year...
I have a WiThings Body Composition bathroom scale but it hasn't measured any body composition measurements since 2017 and I thought I might have a go at fixing it..
The scale has four quadrants

Now it is very likely that I completely disregarded any instructions regarding cleaning so it is possible I have removed the conductive surface on the glass... How conductive is that surface meant to be? Can I measure it to see if I have destroyed it or if the problem is elsewhere?
Any body ever repaired such a device?