Hi guys, one more update from my end.. now I'm certain. The issue happens always from Sunday to Monday (CET). This morning again I was logged out. Memory or space is definitely not an issue. I'm certain I have closed all open apps in the evening before going to bed. I'm on iPhone 15Pro 256GB, plenty of space available.
From the 'error console' within the app, the only thing I can't run is the "Test native storage" - nothing happens when I click on the button if that helps.

info
{
"webViewVersion": "17.3",
"name": "iPhone",
"diskFree": 4460531712,
"diskTotal": 255866785792,
"manufacturer": "Apple",
"isVirtual": false,
"realDiskFree": 137513206334,
"osVersion": "17.3",
"iOSVersion": 170300,
"memUsed": 113688576,
"realDiskTotal": 255866785792,
"model": "iPhone16,1",
"platform": "ios",
"operatingSystem": "ios"
}

Hi guys, one more update from my end.. now I'm certain. The issue happens always from Sunday to Monday (CET). This morning again I was logged out. Memory or space is definitely not an issue. I'm certain I have closed all open apps in the evening before going to bed. I'm on iPhone 15Pro 256GB, plenty of space available.
From the 'error console' within the app, the only thing I can't run is the "Test native storage" - nothing happens when I click on the button if that helps.

info
{
"webViewVersion": "17.3",
"name": "iPhone",
"diskFree": 4460531712,
"diskTotal": 255866785792,
"manufacturer": "Apple",
"isVirtual": false,
"realDiskFree": 137513206334,
"osVersion": "17.3",
"iOSVersion": 170300,
"memUsed": 113688576,
"realDiskTotal": 255866785792,
"model": "iPhone16,1",
"platform": "ios",
"operatingSystem": "ios"
}

@Ondřej-Šutera favourites and setting are kept. Latest app version 40.010234 and iOS17.2.1. Login via Apple

@Ondřej-Šutera nownit happened again, perhaps doesn't want to start the work week?

hey guys, as advised from Twitter.. I have the same issue. Actually, I usually see that I'm logged out when on the widget on my iOS - iPhone 15 Pro, latest iOS version. Similar to @Reggaenald it happens once in a while, but I'd say it's actually exactly once a week. I will monitor it and let you know next time when this happens. But the behavior is like that - on the widget it shows 'login to Windy'. I open it and then I have to go through the normal login process...
Not sure what else I can do to help, next time it happens I can give you screenshots.. now it's too late I guess.