WiiM Home app with WiiM Mini sees my Plex DLNA server on my WD My Cloud Ex2 Ultra, but cannot browse its contents. The same Plex server works fine with other DLNA clients like BubbleUPnP. I’ve cleared cache, uninstalled the app, reinstalled the app, power-cycled all devices, and reset WiiM Mini to factory, to no avail. There was a time when I could see the contents, but it just stopped. I'm unable to get the app to send feedback, as well. All these problems came from the blue. Can anyone help?