Why cant I close a Trello board?

I tried to follow the instructions at https://help.trello.com/article/801-deleting-a-board

However, I don't have this option to close the board.    I'd include a screenshot, but can't figure out how to copy it in here without saving and uploading :(

Please believe me, there's no link to close the board, instead, there a link for public viewing.

I'm new to Trello, just trying to see whether that will help with my Alzheimers, but maybe I'm too far gone.

Appreciate any pointers!

Why can't I close a Trello board?

You can't delete Trello boards if you're a guest in a workspace or a board member without admin privileges. You'll have to either request admin access or ask someone else to delete the board.

How do I close Trello?

Open the board you would like to archive. Tap the three dots at the top right of the screen. Select "Board settings." Select "Close board."

How do you delete a board?

Click on the grey coloured pencil icon on your selected board. This option is at the bottom of the board's icon. Click Delete. It's in the bottom left corner of the board's Edit window.