Dynamic Content not showing up

Hello,

I've been trying to figure out how to get a Twitter icon to appear on my website. It's unpublished (the site) and I'm still trying to configure layout and things. I haven't used Wordpress before it's quite challenging so I'm just trying to learn and figure things out first. I followed this video, https://www.youtube.com/watch?v=HMhUo91RjsE&t=0s

Basically everything works fine. But when I create the button and I do the "Dynamic Options," and link "Author meta" for "Dynamic Link Type," the button disappears. If I remove the Dynamic Option, the button reappears. It also does not link to anything if Dynamic Content is removed (I just want it to link to my twitter account).

I cannot figure out how to get this resolved. I'm also trying to figure out how to simply use a Twitter icon as my "contact" for my site. Any help is appreciated. Thank you