I have a different widget problem to those I've seen above.
On both my Android phone (Sony XZ2 Android 9) and tablet (Lenovo Tab 4 Android 8.1.0) I have a permanent notification from Windy "Updating widget".
But I don't have a widget and I cannot add a Windy widget to either and I can't get rid of the notification.
I use Nova launcher on both devices and wonder if there is a mismatch between this and Windy.
Any suggestions would be very welcome!