I have not received the "no data in 30 days" message (yet!) but today my WU station (KIDBOISE93) is missing from the map. Under member settings and "devices" my station is shown with a green online dot but the station page shows offline. I do see my station on Ambient (Mesa Vista, Boise), CWOP, Mesowest, NWS (GW0891), and PWSWeather (MESAVISTA).
I logged out of WU and back in but it is still not showing data. Oh well.
*Update* 7 hours later: Earlier I had also rebooted my Ambient weather display, to no avail. I just rebooted it again, but this time left it unlugged for 10 minutes instead of 30 seconds. And lo and behold there is the WU icon on the display and my station is back on the map. Was it the reboot or WU randomness? We may never know!