I setup an Ambient Weather PWS here at the office and I noticed that it took a little bit for it to appear in the list of stations I could choose from. It seems that their system wants to do some validation before it makes it into the list of stations.
You didn’t mention PWSWeather.com and I am pretty sure this is where the App & Timer will get the list of stations from. In the settings I had, it said to use weatherforyou.com to get it on PWSWeather.com.
I only configured WUNDERGROUND (not required for App but fun to see the data) and PWSWeather.com (what the B-hyve system uses, weatherforyou.com in the settings).
When I set up PWSWeather.com I had to create a user name and then a stationid, then in the Ambient Weatherbridge it asked for the WeatherForYou username and password, what it really needs is the stationid and the password.
If your system stops reporting they (Aeris & PWSWeather.com) will also remove it from the list.
Here’s the link to ours on both WUNDERGROUD and PWSWeather:
Maybe you can compare this with what you have and see if there’s any difference.
Hope this helps!