1.) Not currently supported.
2.) The HTML5 player is under development, so it is not “stable” in that sense. If you do notice it not working for an extended period of time, feel free to reach out.
3. Can you clarify what you mean by this, maybe with an example?
Do you know if they were on the current version of the player? That is the only player that will be supported. I believe older versions of the player did support changing the logo, but as it is the new player does not (at this time).
What do you mean by not working? HTML5 is only supported on a few platforms (some mobile browsers, and desktop safari), so this may be throwing some false flags as to why it’s “not working.”
What channel was the delay not working on? Setting a 60 second delay did seem to work properly for me: https://db.tt/WZE3Gtlm