The config flow for the WebOS TV integration doesn’t currently support saving more than one webostv.conf file. This means that when using the config flow to configure additional LG TV’s, the webostv.conf file is overwritten with details for the newest TV. The result is that the other TVs will be unpaired after a restart of Home Assistant and the config flow will prompt to pair again.
While you can manually create multiple .conf files and point each LG media player instance in configuration.yaml to its corresponding .conf file, this requires editing files and isn’t very straight forward or user friendly for new and less experienced Home Assistant users.
I’m suggesting that support be added to the config flow to handle multiple TV configs to be congruent with the overall effort to improve level of user friendliness of Home Assistant.
For details on the current method of adding multiple entities, refer to the issue that was opened on this topic: https://github.com/home-assistant/home-assistant/issues/28902