Fon changed everywhere exept the projects grid

Hello, This is my current website https://kangaroo-ellipsoid-y9tt.squarespace.com/ Password: 123

I tried changing the font using code, and it was successful, however, the projects title's fonts didn't change 

I need help changing this font too

Thank you so mush

Titles use this code

h3.portfolio-title {
    font-family: 'circular' !important;
}