Hi there,
You can use this filter:
https://docs.generatepress.com/article/option_generate_blog_settings/
So the code should be something like this:
add_filter( 'option_generate_blog_settings', 'lh_cpt_readmore_label' );
function lh_cpt_readmore_label( $options ) {
if ( is_post_type_archive( 'CPT_name' ) ) {
$options['read_more'] = 'My custom read more label';
}
return $options;
}
Adding PHP: https://docs.generatepress.com/article/adding-php/
Let me know if this helps 🙂