Two ways to identify your access
An M3U URL points the player to a playlist. A server-style login typically uses a server address, username and password. Use the method actually supplied for your account and supported by your player.
Avoid the common input errors
Do not put a full playlist URL into a server-only field. Watch for missing characters, added spaces and an incorrect protocol. Copy only from your private access message.
A format does not promise a feature
EPG, catch-up, categories and on-demand navigation still depend on the player and source. Changing the login format alone will not create unavailable content.
Treat the link as a password
A complete URL may carry credentials. Keep it private and contact support if you think it was exposed. Never post it in a public support thread.