So you will now see the IPTV Smarters Pro app so its a simple case of clicking on it and then clicking on install and waiting for the app to install then clicking on open.
Now if your subscription from us you should not be reading this as you should have clicked the link near the start of this guide on how to install our own kick-ass app on to your Sheild but if you do not have a sub from us then you have 2 options now on the screen depending who your provider is.
If you received an M3U IPTV playlist file from your provider you can add it to your shield and open it by clicking on Load your playlist or file/Url and then locating the m3u file you downloaded or if your supplier gave you an M3U URL you can use that by clicking the top box.
To be honest most providers use the Login with Xtream Codes API so you will find this is probably how you will do this and it is far easier this way plus your channels and VOD will stay up to date using this option.
So once you clicked on Login with Xtream Codes API you will see this screen below.