To remove author profile on one blog page in Squarespace, you can follow these
#1. First, use Squarespace ID Finder to find ID of Blog Page.
In my example, we will have: #collection-65653b85a332be611d0ab35b
We need to change # symbol to . dot icon, so new ID will be
.collection-65653b85a332be611d0ab35b
#2. Use this code to Custom CSS box
/* Hide blog author */
.collection-65653b85a332be611d0ab35b .blog-item-author-profile-wrapper {
display: none !important;
}