The store mode is a function used when displaying products in a store, and when this function is set, related messages or advertisements may be displayed on the screen.
Try this
How to cancel store demo
➔ How to cancel store demo in [2022 WebOS 22] [2021 WebOS 6.0]
1. After turning on the TV, press the [Settings] button on the remote control.
From [Settings], select [All Settings].
2. Select [General] and then [Devices].
3. Select TV Management.
4. Select [Home/Store Mode].
5. Select [Home Mode] to complete settings.
➔ How to cancel the store demo in [2020 webOS 5.0]
1. After turning on the TV, press the [Settings] button on the remote control.
From [Settings], select [All Settings].
2. Select [General] and then [Additional Settings].
3. Select [Home Mode] in [Home/Store Mode].
From [Settings], select [All Settings].
This guide was created for all models, so the images or content may be different from your product.