Having downloaded and installed the Customizr theme, it seems to work properly for me.
Here’s the approach I used:
(1) Within the admin section of WordPress, create the pages that will serve as featured pages.
(2) Once those pages are created, go Appearance > Customize within the admin section.
(3) Click on “Content: home, posts, …”
(4) Then click on “Front Page”
(5) Scroll down to the FEATURED PAGES OPTIONS
(6) Make sure that the “Display home featured pages area” setting is set to Enable.
(7) Complete the desired fields, selection your options from the drop-downs and add copy to the featured text boxes.
(8) Once you’ve completed the fields and made your selections, click on the “Save & Publish” button at the top of the Customize column.
(9) Surf over to the front-end of the site (where visitors can see your home page), refresh the browser and your changes should be visible.