My first launch has a problem. It launches immediately when I hit the Cancel button when scheduling

I created a submission, filled in all the necessary information, and saved it as a draft. But when I pressed the Schedule button, a list of the next available launch dates popped up. I didn't want to set a schedule at that time, so I pressed the Cancel button. However, it launched my submission immediately, and I don't know why? This is my launch: https://www.producthunt.com/posts/takenotex My website: https://takenotex.com