Screen mirroring not working on Galaxy S6

[Android Central Question]

Hi guys I can not mirror my Samsung Galaxy S6 on LG Smart LG webOS TV UK6500AUA

 

[SpookDroid]

Do you get any error? Have you checked your router configuration to make sure it's not blocking traffic (tunneling, VPN, QoS options, Firewalls...)? Are you able to mirror other devices in the same network?