Squarespace 7.0 Blog Comments Not Showing Up
I don’t know how long this bug has existed but for some reason the comment area defaults to display:none.
.squarespace-comments .comments-content.read-only .new-comment-area { display: none; }
To fix it, add this to your Custom CSS.
.squarespace-comments .comments-content.read-only .new-comment-area { display: block !important; }