Customization of EasyBlog Subscription Module

I'm been setting up our site with EasyBlog for the past few weeks and it's been an exciting experience. I've been able to customize just about every aspect of our blog by going to "Theme > Edit > Template Editor" and picking the file I want to edit. However, I can't seem to find the file associated with the Subscription Module. I would like to customize it to match our theme but I have had no luck finding the file that affects the subscription module. Please advise. Thanks!