GeneratePress's Read Template - Post Meta Edit

Hello,

I hope this message finds you all safe and well.

I have an issue that needs help... I've already tried all ways to do it myself but just can't figure out.

So I am using GeneratePress's Read template/theme.

I used the following code (in Snippet's plugin) to show the post's published date and edited date:

add_filter( 'generate_post_date_output', function( $output, $time_string ) {
    $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time>';

    if ( get_the_date() !== get_the_modified_date() ) {
        $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">Published: %2$s</time> | <time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">Edited: %4$s</time>';
    }

    $time_string = sprintf( $time_string,
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html( get_the_modified_date() )
    );

    return sprintf( '<span class="posted-on">%s</span> ',
        $time_string
    );
}, 10, 2 );

It works on generatepress default theme. But it doesn't work on Read template/theme.

It does show on subcatgeory pages, but not on single posts itself.

Can you help me?