Cannot Successfully Select BB Template to be Used as a Header

The instructions on the wordpress plugin page instruct me to:
Design a Page or a Template you wish to use as a Header / Footer
Open the Page Builder settings page
Open the BB Header Footer settings
Select the page or template that you saved to be used as a header.

And the video instructions depict:
https://user-images.githubusercontent.com/39917835/40927594-c34a0c1e-67e4-11e8-9e96-5bf3cdfd837d.png

However, I encounter the following:
https://user-images.githubusercontent.com/39917835/40927649-dcd40db0-67e4-11e8-86da-517f6c8676a4.png
And when I select that template I’ve created and named “Header”, nothing happens. I suspect that is because of this note:
https://user-images.githubusercontent.com/39917835/40927711-07d67994-67e5-11e8-9784-c59ee663503a.png

Note: I am using Beaver Builder Child Theme. I am not using Themer. My other plugin is UABB (paid, not lite)

Thank you for any suggestions you might have!

The page I need help with: [log in to see the link]