I just wanted to mention that i have the same issue. im not able to connect to the WebUI via my local ip. Im using Zerotier and Tailscale and with im also not able to connect. I was able few weeks ago somehow by deactivating Zerotier and connecting via Tailscale but now even that does not work. I cannot see any errors in the log and also the downloader is running normally in the background and im still able to use it via Sonarr / Radarr but like i said no access to the UI.