I've just downloaded the Smart IPTV app on my Samsung smart TV. I paid the fee to activate it at siptv.eu

How do I go about adding channels that work to it? I've found some random lists on a few forums but all that gets me is the channel descriptions and guides. The channels just endlessly keep trying to connect.

People keep mentioning username and passwords needing to be added to the text file but I didn't receive any sort of username and password when I registered with my MAC address.

Is there another subscription I need to be getting for this to work? All of the tutorials out there sort of glaze over this. They seem to register, add channels and it works.

Thanks.