You must subscribe to an Adam IPTV service provider to receive a valid username, password, and portal URL.

Daily IPTV Xtream Codes List | PDF | Online Services - Scribd

However, based on available information, here is how to get Adam IPTV working:

If looking for free trials, they are often shared in, but quickly expire, on forums such as Scribd's Daily IPTV . If you are looking for free trial options, How to setup an M3U link instead of Xtream Codes?

Once you have the credentials, you will use them in an IPTV player (like Smarters Pro) by choosing "Login with Xtream Codes API".