Arsitek theme is supported page template. There is 2 page template type for each page.
This is standard page that can use for every page, allow comment and have an option to show or hide your page title.
This page template support elementor page builder as well, so you can edit your page with elementor. But if you want to make your page full width (with elementor) you need to "Strech Section" for current elements section because this page template have container (define page screen width).
Page Builder Template
This page not allowed page comment, and doesn't allow page wrapper option. This page template made for Elementor page builder only so if comment detected from post, your page comment doesn't come up. Also doesn't have Page Title.
Other page template will shown after you installed the required plugins, such as "Elementor Canvas" and "Slider Revolution Blank Template". Both of these pages are not stylized by us and will disappear after deactivate active plugin.