Please try the following steps to get your remote working with your Smart TV:

1. Check that the remote is in the correct mode for the device.
2. Make sure the batteries are correctly installed and not drained.
3. Double check that both the TV and the remote are paired via Bluetooth.
4. Do a reboot of both devices and wait a minute before trying again.
5. Try to locate replacement batteries or a new remote if the current one isn’t functioning properly.