I had deactivated my UPnP integration while working on some network related stuff and then updated to Core 2021.2.1 and noticed that it’s not auto discovering my UPnP setup anymore. It can’t locate it on the network either if I try to install it via the GUI.
I am having a very similar issue with my instance. After deleting a upnp discovered device (following an error which i was hoping to fix by remove and rediscover) it is not show any upnp devices (new or old). Home assistant version 2023.5.3