Find the genuine television application
LG identifies the Content Store as its portal for television applications and content. Search there for the intended player, open the listing and confirm the publisher and model requirements. An iOS, Android or desktop application with the same name is not proof of a matching webOS release.
Keep the television model and webOS version in the setup record. Availability and controls can vary across models and markets, so a screenshot from a newer LG television may not describe an older unit.
Enter the account type the player supports
Some television players use a device-bound activation and playlist-management website, while others provide a login on the TV. Use the actual developer instructions for the chosen application. A MAC/device identifier in that workflow is not the same thing as Apple’s macOS.
Do not upload a private playlist to an unrelated site that merely uses a similar player name. Compare the developer identity and the exact management destination shown by the installed app.
Use the remote for an acceptance test
Try account entry, search, the guide, audio/subtitle selection and the return path from playback. If the picture extends beyond the visible television area, inspect picture sizing before assuming the player has lost its controls.
For a source-specific failure, preserve the player version and the exact error or media format. A working Content Store download establishes installation; it does not establish access to every source the account might list.
Consider an external device as another setup
If the needed native player is unavailable for the television, compare an external HDMI device with a supported application. Treat that as a new platform decision, including its remote and app costs. It does not turn the built-in webOS system into Android.