Most but not all devices are using reserved IP Addresses. Why do you ask? I am looking to move all of them over to reserved, but I don't think I will have enough reservation spots. I thought I saw a link in here which indicates only 25 right now on this 1.01 firmware.
So two hours after I posted this and kept trying that entire time, they all of a sudden showed back up. The activity wasn't correct since it was all wiped out, but the Network map with devices showed back up. I wonder if there was an issue interacting with the cloud service at that time when it didn't appear.