#1464323

Hey lobstahhhhhhh,
It sounds like your function is only changing the standard logo and not the transparent logo, typically these are two different logos.
For the standard logo use this function:

add_filter('avf_logo','av_change_logo');
function av_change_logo($logo)
{
    if(is_page(206) )
    {	
    $logo = "https://kriesi.at/themes/enfold-business-flat/wp-content/uploads/sites/43/2014/08/logo_flat_portfolio.png";
    }
    return $logo;
}

for the transparent logo use this function:

function av_change_alt_logo_img($header){
    if(is_page(206) ){
        $header['header_replacement_logo'] = "https://kriesi.at/themes/enfold-startup/wp-content/uploads/sites/47/2015/02/logo_coming_soon.png";
    }
    return $header; 
}
add_filter('avf_header_setting_filter','av_change_alt_logo_img');

If you want both to be the same image, you can also do that.

Best regards,
Mike