Hi @minhdo89,
Thank you for the clarification.
Since you are using the WPDM free version so you have to use <a href="[page_url]" class="btn btn-secondary">View More</a>
on the relevant link-template file by following the below link in order to create the View More
button.
Template Files
However, with the WPDM Pro, the Call To Action 4
template comes out of the box and you will be able to use it easily.
I hope that helps. Let us know if you have any further queries.