Referrer validate can be a very difficult feature to test because the panel temporarily allows an IP once it has been viewed on a valid domain, including the service overview. This means that if you then change the domain but connect with the same IP the player will still play because your IP has already been whitelisted. You may be having problems with this feature because you have viewed the service overview on your current device.
The best way to test this feature is using a different device with a different IP to verify if it is working properly. If you continue to run into issues, feel free to contact our helpdesk for support.