Tnx both for replys.
Regarding WU, I know that it is using GET method to send data and I already tested it with my API key.
Regarding Ecowitt, which is more interesting to me as it provide much more sensor data so I am trying to develop my app relying on it mainly.
So for link above, this is correct format of message sent via POST from PWS to server ?
{"PASSKEY":"XXXXXXXXXXXXXXXXXXXXXXXX","stationtype":"EasyWeatherV1.4.4","dateutc":"2020-02-23 23:14:11",
"tempinf":"74.8","humidityin":"43","baromrelin":"30.021","baromabsin":"29.983","tempf":"80.1","humidity":"31","winddir":"223",
"winddir_avg10m":"180","windspeedmph":"1.1","windspdmph_avg10m":"0.7","windgustmph":"2.2","maxdailygust":"10.3",
"rainratein":"0.000","eventrainin":"0.000","hourlyrainin":"0.000","dailyrainin":"0.000","weeklyrainin":"0.000","monthlyrainin":"0.571",
"yearlyrainin":"2.614","solarradiation":"580.36","uv":"5","temp1f":"77.0","humidity1":"40","temp2f":"79.3","humidity2":"41",
"temp3f":"74.3","humidity3":"45","soilmoisture5":"40","soilmoisture6":"51","pm25_ch1":"14.0","pm25_avg_24h_ch1":"14.0",
"wh65batt":"0","wh25batt":"0","batt1":"0","batt2":"0","batt3":"0","Siolbatt5":"1.7","Siolbatt6":"1.7","pm25batt1":"4","freq":"433M",
"model":"HP2550_Pro_V1.5.6"