Hello,

You have to replace the file archive.php with the file above:

https://wetransfer.com/downloads/4c9bd09eff614cd54e2a1b18f026412320200605082217/7292fd15d21921f5051f0aaef908bb4320200605082238/dc353a

Practicatically I have added this line of code inside of container div:

     <?php $category = get_the_category();
            if(is_category()): ?>
                 <h2><?php echo $category[0]->cat_name; ?></h2>
              <?php endif; ?>

Regards!