Some weirdness for you. I recently moved from my old Netatmo system to the Ecowitt GW1003. All fine with that but now have an issue with the day rain total which is stuck with 6553.50mm. I cannot seem to move it and obviously it is putting all the readings out. It would appear that the data is from the cronjob gathering data from the station. I have attached a screen shot to illustrate, also the station record in xls format direct from Ecowitt.
I have found using the station rain data in WD to be the easiest way to keep rain data correct. There is an option to do this on the control panel where you set up to use a GW1003.