Hello, @Wade Yang,
As you can see in this screenshot: https://postimg.cc/gX4qQQqF there is no option available in the widget setting to set the columns on mobile. Second, if you want to hide the title you can edit the title and from the “Responsiveness” option of Elementor you can hide it see the image: https://postimg.cc/fSJXFLRm Now, Regarding the two columns display issue on mobile it is working fine as well. I have checked it on my personal mobile phone and recorded a video for you here is the video link: https://streamable.com/r9mi4a
For the mobile optimization questions simply create a new topic and describe the issues in the detail.
Regards 8Themes Team.