Removing newsletter block from footer (Brine/Mentor template)

Site URL: https://www.firstlutheranonalaska.org

Recently switched from the Bedford template to the Brine family template titled Mentor.

The Mentor template had a newsletter block as a large part of the footer, and I had no need for a newsletter block. So I deleted all the blocks from the footer regarding the newsletter. But it still leaves a large empty space in the right side of the footer, as if there is a column specifically for the newsletter block. I attempted to put something in that space, but it appears to have put it in the middle column, and the right column remains empty.

I'd like to be able to edit/delete this far right column, and can't seem to figure out how to get to it. Editing the "Footer Middle Blocks" doesn't appear to give access to the column the newsletter was in. Any thoughts would be appreciated.

Add this code to Design > Custom CSS to fix problem

.tweak-footer-layout-columns .Footer-middle {
    justify-content: space-between;
}

Thank you tuanphan!