A playlist points to your access
An M3U URL tells a player where to retrieve a playlist. The complete link may include credentials, so treat it as private account information.
A server login splits the details
Some players ask for a server address, username and password separately. Use only the fields supplied for your account; a full playlist URL does not belong in a server-only field.
Features still depend on the app and source
Changing the input format will not create missing catch-up or guide data. Confirm those features for your player, server and channel.
If sign-in fails
Check for extra spaces, a missing protocol and copied punctuation. Then contact support with the player name and error message, not a public screenshot of the full credentials.