Have been having a very similar issue... my base unit would occasionally stop reporting to WU, as though it were offline. However, it would appear to be connected to wifi (could even see it from my device manager on my router) but it wasn't reporting to my station ID on WeatherUnderground. Until Oct. 4, I was always able to resolve by connecting to the browser splash page on the device and re-entering my credentials (which were already showing in the splash page). Since Oct. 4, I have been completely unsuccessful at re-establishing a connection to WU (even after resetting). This is very frustrating and driving me to likely purchase a different weather station.... would love to salvage this one, but it's just too buggy.