What do I need to do so Max UV is recorded in the daily report?
make sure you have solar +uv ticked in the weather station type setup, davis VP setup
Yes that is already ticked
Still no Max UV recorded
not sure why you say still nothing when it was not working before anyway?
I have found some missing code
it works for the day selected, but not for the whole month report
use the latest .zip update
Did not realizeit was not working before but it is now.
Thanks for the fix 
I dont have a UV sensor myself, hence I did not realise this was not working