Not sure what happened but I can now log in to my stations. Maybe it just took some time for the changes to agltemp that I made today to ripple through.

I check data from my stations and found that one of the parameters, agltemp, on all but one of my stations is set to null.
I used the API to set these to 0 but the login problem remains.

There is also parameter "cc" that reports null in the station data for all but my first station. I have tried changing this with the API but with no success. Is this the problem and, if so, how do I get rid of the nulls?

Reported data from one of my inactive stations is as follows:
... note the "cc": null after "observationUpdated": "2024-08-22T06:00:59.081Z" a few lines above the data fields.

{
"header": {
"name": "Mathy's, Ngarimu Bay (WHGPC_WS_05)",
"content": {
"url": "https://www.ozonenewzealand.com",
"text": "Waikato Hang Gliding and Paragliding Club"
},
"agl_temp": 0,
"agl_wind": 4,
"elev_m": 207,
"lat": -37.067985,
"lon": 175.526515,
"stationType": "Custom Built",
"shareOption": "Open",
"id": "5f058a546",
"stationId": 5,
"type": "pws",
"updated": "2024-10-08T23:16:09.597Z",
"observation": {
"avgFreqMin": 20.869565217391305,
"records": 3,
"avgDelayMin": 10.434782608695652,
"latestObs": "2024-08-18T04:22:58.082Z"
},
"observationUpdated": "2024-08-22T06:00:59.081Z",
"cc": null,
"locationUpdated": "2024-10-08T23:16:09.597Z",
"si": 5
},
"data": {
"ts": [
1728187331711,
1728188549712,
1728188781708,
1728278693560,
1728423564556,
1728430256499
],
"temp": [
298.449999237061,
298.449999237061,
298.449999237061,
298.449999237061,
287.849999809265,
285.15
],
"wind": [
3.17,
3.17,
3.17,
3.17,
7.06,
6.7
],
"wind_dir": [
17,
17,
17,
17,
316,
254
],
"wind_gust": [
3.72,
3.72,
3.72,
3.72,
9.46,
8.06
]
}
}

Yes, I have 10 stations on Windy but some are inactive at the moment which maybe is causing the problem. To try to log in, as done successfully previously, I am going to https://stations.windy.com and clicking 'Register Stations' which takes me to https://stations.windy.com/stations but I just get a white page with the spinning circle. I have tried logging out from https://account.windy.com and logging in again, also resetting my password but the problem persists. I can successfully login at https://account.windy.com but I need to access my stations to manage them.

From your reply:
"More specifically, I would recommend checking those null parameters, it is probably the reason for the whole issue."
What/where are the NUL parameters referred to and how do I change/correct them?

Thanks
Mark

More specifically, I would recommend checking those null parameters, it is probably the reason for the whole issue.