1. We just checked your account and we found Netro waterd your zone 5 after rain for 20 seconds. Did you turn off the smart zone feature manually? Normally Netro will skip watering after rain, however, the moisture level for you zone 5 is still low after rain because slight rain amount was reported by weather provider (PWS). Your zone 5 is associated with sensor and Netro uses both the top soil and deep soil moisture to estimate moisture level.
2. I talked to our R&D and we will support this feature of changing the moisture level to a lower value in the next release of the app. We can open this feature for you currently from the server side and please let us know if you would like to try.