The custom font in css isn't showing up on mobile.

Site URL: https://normachurchill.com/

I have read a few of the other  posts on this issue but still cant seem to figure it out. Anyone have any idea what i'm missing, this is the first time I have had this issue. Thanks 

//Karin Font//
@font-face {
    font-family: ‘Karin’; 
       src: url(‘https://static1.squarespace.com/static/5c983f3c77b9034bc5e6a09d/t/63175bc6d7f4153c04c2c58e/1662475206232/KarinRegular.ttf,);
  } 

h1 {font-family: 'Karin'!important;
  font-size: 45px;    
  font-weight: 500;     
  color: inherit;
  line-height: 1.1em;
  text-transform: lowercase;
  letter-spacing: 1px;}

h3 {font-family: 'Karin'!important;
 font-weight: 500;     
  color: #1b2854;
  line-height: 1.2em;
  letter-spacing: .5px;}
h1, h2, h3, p {
hyphens: none;
}
.Header-nav {
font-family: 'karin'!important;
font-weight: 700;
font-size: 18.5px;
}

You missing some symbols. Use this new code

@font-face {
    font-family: Karin;
    src: url(‘https://static1.squarespace.com/static/5c983f3c77b9034bc5e6a09d/t/63175bc6d7f4153c04c2c58e/1662475206232/KarinRegular.ttf);
}

h1 {
    font-family: Karin !important;
    font-size: 45px;
    font-weight: 500;
    color: inherit;
    line-height: 1.1em;
    text-transform: lowercase;
    letter-spacing: 1px;
}

h3 {
    font-family: Karin !important;
    font-weight: 500;
    color: #1b2854;
    line-height: 1.2em;
    letter-spacing: .5px;
}