When the iptv provider sends a new custom config with a new url and eventually another DNS, the problem is that it erases and does not keep :
username & password for XC with login required programmation of the portal
All the favorite and history are deleted also...
which is not so bad as having to reprogram username and password when the users are old or "newbie/clumsy" and can't manipulate the remote properly and the settings, even with help from the reseller in video, it can be frustrating and last hours just to put a new username and password as many people can't even put the back camera in whatsapp or find the chat with the username and password when they are in audio or video...
So for a smoother experience, I would suggest if it's possible not to erase and to keep the old username and password when a new custom config is detected and applied.