the 0.7mm is consistent (although it didn’t match your manual gauge)
“none” means that at that very instance the tempest isn’t detecting rain. It can happen with very very light rain.
You can improve on the accuracy by using this page (but it takes a lot of data before you will see improvements) Rain Report Accumulation Data
Wrong time of year for “a lot of rain data” over here…!! (90.3mm Year to date)
Although the next few months hopefully that will change…
Many thanks I do have the Rain Check enabled, will investigate Rain Report Accumulation Data