It works now. Thanks!

I didn't unplug my TV (access to the cord is difficult where I have it mounted), but I did turn it completely off and back on. I also turned off the cable modem, router, network switch. and HDHomeRun tuner; then powered them back on in that order. I still have the same problem.

My iPhone and Windows 11 PC apps work fine, by the way.

I've been using an HDHomeRun FLEX 4K with a 4 TB USB drive as a DVR for some time and it works great, including with the webOS HDHomeRun app on an LG TV. As of last night, however, it doesn't work and this is what appears on the screen:

Version 202508122
Using webOS API (LG)
Discovering WebOS ...