I'm seeing multiple replies on this thread and other threads (here, here) mentioning this problem recently.
Since my last post, I have deleted my home in HomeKit, reset all HomeKit hubs, added everything back into a new hub including the ping/ack hack mentioned in this thread, ensured fixed IP addresses, ensured nothing in my UniFi network settings that would inhibit / filter internal traffic including use of VLANs, and have option in HE HomeKit app to reset hourly. Worked fine for a few days, and changed absolutely nothing about the setup otherwise. Today, I again get responses for HE linked devices and see no active connections in the admin panel.
All of this started happening after updating to 2.3.9.150. That's the only variable that changed in my HomeKit setup.
Pretty certain this is an HE issue.
