By default, it is not possible to display both the title and the logo. The easiest way how to achieve it is to include the title into your logo image in a graphic editor.
But if you would like to display the title as a text above the logo image, please open the “header.php” template, search here for the following code:
<?php if ( $seasun_options_db['seasun_logo_url'] == '' ) { ?>
<p class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php bloginfo( 'name' ); ?></a></p>
<?php } else { ?>
<a href="<?php echo esc_url( home_url( '/' ) ); ?>"><img class="header-logo" src="<?php echo esc_url($seasun_options_db['seasun_logo_url']); ?>" alt="<?php bloginfo( 'name' ); ?>" /></a>
<?php } ?>
and modify it in this way (remove the PHP conditions):
<p class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php bloginfo( 'name' ); ?></a></p>
<a href="<?php echo esc_url( home_url( '/' ) ); ?>"><img class="header-logo" src="<?php echo esc_url($seasun_options_db['seasun_logo_url']); ?>" alt="<?php bloginfo( 'name' ); ?>" /></a>
Best regards,
Tomas Toman