I have tried and checked all things mentioned by yourself to no avail so I have attached my config file in case I am missing something.
My WU is working again via Cumulus MX on my old receiver. (I note your advice re sending from two RX units simultaneously.)
Code:
// --------------------------------------------------------------------------------------
// WeatherDuino Pro2 PLUS - Version: 1.0 b017
// Start of user configurable options
// --------------------------------------------------------------------------------------
// --------------------------------------------------------------------------------------
// Define ID's for this weather station
// --------------------------------------------------------------------------------------
#define Station_ID 0xA1 // Station_ID, use the same value in all TX units
#define Relay_ID 0xA3 // Relay_ID, use the same value in all WD units
// --------------------------------------------------------------------------------------
// Define your Weather Station location
// --------------------------------------------------------------------------------------
#define LATITUDE -19 // Put here your Station latitude in tenths of degrees North
#define LONGITUDE 146 // Put here your Station longitude in tenths of degrees (minus for West)
#define ELEVATION 55 // Put here your Station height above sea level in Meters
// --------------------------------------------------------------------------------------
// Define rules for Auto Summer Time Display, and clock adjustment
// --------------------------------------------------------------------------------------
// Example for Australia Eastern Time Zone (Sydney, Melbourne)
// TimeChangeRule aEDT = {"AEDT", First, Sun, Oct, 2, 660}; //UTC + 11 hours
// TimeChangeRule aEST = {"AEST", First, Sun, Apr, 3, 600}; //UTC + 10 hours
// Timezone myTZ(aEDT, aEST);
TimeChangeRule aEDT = {"AEST", First, Sun, Oct, 2, 600}; //Qls summer time GMT + 10
Timezone myTZ(aEDT, aEDT);
// --------------------------------------------------------------------------------------
// Define Roll Over Hour for Meteorological Day
// --------------------------------------------------------------------------------------
#define MeteoDay_HStart 9 // Use values from 0 to 23
// --------------------------------------------------------------------------------------
// Define your Display type
// --------------------------------------------------------------------------------------
#define DisplayType 3 // 1= LCD 20x4, 3= TFT 320x240 ILI9341
// --------------------------------------------------------------------------------------
// Define Display Backlight TimeOut
// --------------------------------------------------------------------------------------
const byte BackLight_Timeout = 10; // Timeout for display backlight in minutes (1 to 255). 0 = Always ON
#define Use_ScreenSaver 1 // Instead of turn off TFT backlight show a big clock screen. 0= No, 1= Yes
// --------------------------------------------------------------------------------------
// Define data display units
// --------------------------------------------------------------------------------------
#define Date_Time_Format 0 // 0 for dd-mm-yyyy, 1 for yyyy/mm/dd
byte Temp_Display_Unit = 0; // 0 for ºC, 1 for ºF
byte ATM_Display_Unit = 0; // 0 for mBar, 1 for inHg
byte Rain_Display_Unit = 0; // no setting, always mm
byte Wind_Display_Unit = 3; // 0 for Km/h, 1 for mph, 2 for m/s, 3 for Knots
// --------------------------------------------------------------------------------------
// Define the type of your Barometric Pressure Sensor
// --------------------------------------------------------------------------------------
#define Barometric_Sensor 0 // 0= BME280, 1= BMP280 2= BMP085 / BMP180
// --------------------------------------------------------------------------------------
// Define the type of your inside Temperature / Humidity Sensor
// --------------------------------------------------------------------------------------
#define InsideTH_Sensor 0 // 0= BME280, 1= HTU21D, 2= SHT21, 3= SHT31
// --------------------------------------------------------------------------------------
// Fine adjusts for Inside Temperature and Barometer
// --------------------------------------------------------------------------------------
const int TemperaturaInt_offset = 0; // Inside Temperature Fine Adjust in Tenths of Degree (-4 = -0,4ºC)
const float pressure_offset = 0; // Pressure Fine Adjust in mB
// --------------------------------------------------------------------------------------
// Define the type of your outside Temperature / Humidity Sensor
// --------------------------------------------------------------------------------------
#define MainOutTH_Sensor 0 // 0 for sensor type SHT31, SHT21 or HTU21D, 1 for sensor type SHT1x or DHT22
// --------------------------------------------------------------------------------------
// Define Wind Speed and Wind Gust resolution
// --------------------------------------------------------------------------------------
// This setting only have effect when the software is used in Davis VP emulation mode
#define VP2_WindRes 0 // If set to 2, set Cumulus Wind Speed and Wind Gust multipliers to 0.448. Wind Resolution 0.72 Km/h
// If set to 1, set Cumulus Wind Speed and Wind Gust multipliers to 0.224. Wind Resolution 0.36 Km/h
// WARNING !!! Setting this variable to 1 allows a better wind speed and gust resolution,
// but also limits both of them, to a maximum reading of just 91.8 Km/h
// If set to 0, system uses Standard Davis 1 mph wind resolution.
// --------------------------------------------------------------------------------------
// Define use of Wind Gust Spike prevention routines (mostly for FO anemometers)
// --------------------------------------------------------------------------------------
#define WindSpikeControl 1 // 0= Disable, 1= Enable method 1, 2= Enable method 2
// --------------------------------------------------------------------------------------
// Define the source of your main outside sensors
// --------------------------------------------------------------------------------------
// ---- If you have all the sensors connected to only one TX board, always select Unit 0 as source
// ---- Define the source of your main Temperature / Humidity sensor
#define TH_OutUnit 0 // 0 for Temp/Hum sensor connected to TX_Unit 0, 1 for Temp/Hum sensor connected to TX_Unit 1
// ---- Define the source of your Main Wind sensor
#define WIND_OutUnit 0 // 0 for Wind instruments connected to TX_Unit 0, 1 for TX_Unit 1
// ---- Define the source of your main Rain Gauge
#define RAIN_OutUnit 0 // 0 for Rain Gauge connected to TX_Unit 0, 1 for TX_Unit 1, 3 for Auriol RF Rain Gauge
// ---- Define the source of your main Solar / UV sensores
#define SRUV_OutUnit 0 // 0 for Solar Rad / UV sensors connected to TX_Unit 0, 1 for TX_Unit1, 9 for not used
// ---- Define installed Solar / UV Sensors
#define Solar_Sensor 1 // 0 for not present; 1 for present
#define UV_Sensor 1 // 0 for not present; 1 for present
#define UV_Transmission 10 // UV Transmission percentage of UV sensor cover material
// --------------------------------------------------------------------------------------
// Extra Sensors Settings and Mapping
// --------------------------------------------------------------------------------------
// ---- Define the source and sensor number of each of the seven extra sensors, insert 9 if not used.
// ---- Source 0 (up to 3) means TX unit0, 1 means TX unit1... (sensor type SHT21 or HTU21D is number 0, sensor type SHT1x or DHT22 is number 1)
// ---- Source 6 is for OneWire sensors
// ---- Source 7 is for BIOS Sensor (Only Temp is get)
// ---- Source 8 is for Dust Density sensor. 0 is Temperature / Humidity, 1 is Dust Density / AQI
// ---- First field = Sensor source, Second field = Sensor number (0 or 1 for TX units)
// ---- Example:
// ---- ES0 ES1 ES2 ES3 ES4 ES5 ES6
//#define ExtraSensors_Source { {0,1},{1,1},{9,9},{6,3},{9,9},{9,9},{9,9} }
// {0,1} - First extra sensor (ES0), will be sensor 1 from TX unit0
// {1,1} - Second extra sensor (ES1), will be sensor 1 from TX unit1
// {9,9} - Third extra sensor (ES2), not used - not mapped
// {6,3} - Fourth extra sensor (ES3), will be OneWire sensor number 3 (OneWire sensors are numbered from 0 to 3)
//
//----- ES0 ES1 ES2 ES3 ES4 ES5 ES6
#define ExtraSensors_Source { {9,9},{9,9},{9,9},{9,9},{9,9},{9,9},{9,9} }
// ---- Define personalized names for each Extra sensor. Attention, maximum 8 chars
#define ExtraSensor1_Name "SENSOR 1"
#define ExtraSensor2_Name "SENSOR 2"
#define ExtraSensor3_Name "SENSOR 3"
#define ExtraSensor4_Name "SENSOR 4"
#define ExtraSensor5_Name "SENSOR 5"
#define ExtraSensor6_Name "SENSOR 6"
#define ExtraSensor7_Name "SENSOR 7"
// --------------------------------------------------------------------------------------
// BIOS soil moisture sensor settings
// --------------------------------------------------------------------------------------
// ---- Please use the included BIOS_ID_Scanner sketch to find you BIOS Device ID
#define BiosSensor_ID 0 // Device ID in HEX format, or 0 not used
// --------------------------------------------------------------------------------------
// Soil / Leaf Interface Settings and Sensors Mapping
// (The mapping logic is the same than used with the Extra Sensors)
// --------------------------------------------------------------------------------------
// 0 = Soil Leaf Interface not used
// 1 = Soil Leaf Interface connected to a TX unit
#define SoilLeaf_Interface 0 // 0, 1,
// ---- For Soil & Leaf data from SoilLeaf_Interface wired to a TX unit, use TX Unit number as source
// ---- For BIOS Soil Temp / Moisture use 7 as source
// ---- To disable use 9 in both fields
// S1 S2 S3 S4
#define SoilTempSensors_Source { {9,9},{9,9},{9,9},{9,9} }
#define LeafTempSensors_Source { {9,9},{9,9},{9,9},{9,9} }
#define SoilMoistSensors_Source { {9,9},{9,9},{9,9},{9,9} }
#define LeafWetSensors_Source { {9,9},{9,9},{9,9},{9,9} }
// ---- Define personalized names for each Soil and Leaf sensor. Attention, maximum 8 chars
#define SoilSensor1_Name "Solo Frt"
#define SoilSensor2_Name "-"
#define SoilSensor3_Name "-"
#define SoilSensor4_Name "LagoAgua"
#define LeafSensor1_Name "Folhas "
#define LeafSensor2_Name "1"
#define LeafSensor3_Name "2"
#define LeafSensor4_Name "4"
// Define VWC calculation method
// Method 1 applies only for VH400 soil moisture sensor
//
// METHOD 1 - Conversion from voltage to VWC (volumetric water content) is done using the piecewise regressions provided by the manufacturer
// at http://www.vegetronix.com/Products/VH400/VH400-Piecewise-Curve.phtml
//
// METHOD 2 - Used for any sensor which have a linear output between voltage and VWC (0V=0VWC, maxV=100VWC) .
#define VWC_CalcMethod 1
// Max and Min output voltage of the analog sensors connected to Soil / Leaf Interface
// Default value for Decagon Devices LWS Leaf Wetness Sensor (5V power): Max. Output Voltage - 1400mV (max wetness), Min Output Voltage - 530mV (dry)
// ADC1 ADC2 ADC3 ADC4
const unsigned int AnalogSensor_MaxVoltOut[4] = { 3000, 1395, 5000, 5000 }; // Values in miliVolts
const unsigned int AnalogSensor_MinVoltOut[4] = { 0, 530, 0, 0 };
// --------------------------------------------------------------------------------------
// Broadacasting settings for Wireless Display Units
// --------------------------------------------------------------------------------------
#define Relay_Data 1 // 0= Disables Data Relay, 1= Enables Data Relay
// --------------------------------------------------------------------------------------
// Davis compatible Data Logger Settings
// --------------------------------------------------------------------------------------
#define Logger_Enable 1 // 0= Disable 1= Enable
byte ARCHIVE_PERIOD = 5; // Default Archive Period in Minutes (Usable values: 1, 5, 10, 15, 30)
// --------------------------------------------------------------------------------------
// Easyweather format data Output
// --------------------------------------------------------------------------------------
#define Easyweather_Out 0 // 0= Disable (defaut) 1= Enable
// --------------------------------------------------------------------------------------
// Internet Settings
// --------------------------------------------------------------------------------------
#define Enable_Internet 0 // 1= Enable Internet connection, 0= Disable
#define SSID "ASUS"
#define PASSWORD "my wi fi password"