If you want to customize the text of this button, you can do that by editing the template. It is a very easy and short tutorial.
Follow the steps:
1. Please make a backup of the files you are about to edit before any updates.
2. Open the file wp-content/themes/januas/section-slider.php
3. Go to line 60, and you will find this code:
<h4><a href=”<?php the_permalink(); ?>” title=”<?php the_title(); ?>”><?php _e(‘Register today >’, ‘januas’); ?></a></h4>
4. Change the text “Register today” to any of your choice there.
5. Update the file.