Hey Andrea,
Your archives page display is powered by Content Views which is a third-party plugin. You will need to contact the plugin author to learn how to style their plugin’s display.
If they don’t have such options, you need to hire a web developer to customize the plugin for you because, regretfully, we do not offer customization services and third-party plugin configuration as part of our product support.
If you opt to not use Content Views though, you can choose Masonry Style for your Archives in Theme Options > Blog and it will display the same view as the main blog or index.

Thank you for understanding.