As silly as this might seem, check your real mac address and double check to make sure the mac address is exactly the same in the configuration. Any deviation, regardless of how slight can and does result in blocked message or not connecting to server. One way to check for your real mac address is by going to your settings and then go to about box or the sub section that provides the real mac address. Once you find the real mac address then you can check your configuration to double check your mac address was entered correctly. Once that is done, power off your box and go to the papiao.is website, log in, then reset your box. Wait 5 minutes and then power up your box and hopefully it will connect.
Re-check your configuration and if the http: or url address is exactly as it should be. Note: If the hxxp://p1.iptv rocket dot tv address does not connect, Try using the Full url address which is hxxp://p1.iptvrocket dot tv/c/index.html
Depending on your "given" url, you may want to double check all information is exact, correct and you may find a space, a dot or / is out of place or missing. Note: The wifi mac address differs from your wired ethernet mac address and if you're using a Stb Emulator, some older versions will not allow you to make any changes to the url so update your emulator to the latest one available.