Subscribe Widget for JetPack not working

I’m trying to add a widget to the sidebar of my posts. I’ve added the Blog Subscriptions for Jetpack to the sidebar widget section, but it’s not working properly. The name of the widget appears but nothing is underneath it and you can not click on it at all. I’m not sure how to fix this?

My website is https://www.thebarbellpress.com if you want to see what I’m talking about.

I appreciate any help that can be given!