I'm not 100% sure what's going on, but I'll update here.
My Access was working just fine on WU, but not data was being sent to MyAcurite. It would show a good signal, but be "offline" on myacurite.com. Mind you, still reporting to WU. I did a reboot of the router while letting the Access sit unplugged with the batteries removed for some time...did not help the situation. I went to the splash page and rebooted the unit a few times. No difference. Then at some-point overnight, it came back to myacurite.com. But now, I have no charts or data available. It just shows current conditions. It is still reporting just fine to WU. I have a smarthub running in tandem with the Access and no issues there. I'm starting to wonder if it's a problem on Acurite's end.
My Vermont Access (and hub for that matter) has been running fine. We had a power outage up there last night and the Access filled in all the lost data. So that's pretty slick.
Just hoping this gets sorted out. As you can see in this thread, I've had some issues with the dropped connection between the Access and the 5 in 1...but this issue is new and certainly perplexing.