Incorrect daily rain after wd restart

when there is an update I try the new software (10.17z). the software takes the old data and every time I see a raindata of 6.4 mm.
that was the data once of last week, but not from today or yesterday or so. so I change the daily rain by hand, but it is a strange (small) problem. this just started a week ago, also with earliers updates of wd.

w xp
davis vp
wd 10.17z

How do I have the software change the Rainfall for “today”? For example, tomorrow morning, the “Rainfall for today” will be the same as last night’s and the “Month to Date” quantity.

Thanks

Joe