Add font to theme

Hi there,

I have tried adding a google font called Dosis to my Enfold theme.
I found the code below in another thread for this type of issue. I copied it in the functions section of the theme. The font is still not there.

I then installed google easy fonts. But when I click the customize button on each page, it does not load with the options to change the typography. I have attached the screenshot to show these lack of options.

Can someone please help me.

add_filter( ‘avf_google_heading_font’, ‘avia_add_heading_font’);
function avia_add_heading_font($fonts)
{
$fonts[‘Dosis’] = ‘Dosis:400,700’;
$fonts[‘Dosis’] = ‘Dosis:400,700,400italic,700italic’;
return $fonts;
}

add_filter( ‘avf_google_content_font’, ‘avia_add_content_font’);
function avia_add_content_font($fonts)
{

$fonts[‘Dosis’] = ‘Dosis:400,700,400italic,700italic’;
$fonts[‘Dosis’] = ‘Dosis:400,700’;
return $fonts;
}