Sketch Theme: Logo option missing

I’m currently using the Sketch theme with BlueHost WordPress hosting and the option to upload and add a logo next to the title and tagline isn’t showing up.

When I originally started my WordPress blog on wordpress.com (without hosting), the Sketch logo option worked perfectly. Ever since I exported all of my WordPress content into WordPress on BlueHost, the logo option in the customization menu has been non-existent.

How can I get my logo added to my page (www.katebillman.com) if there isn’t an option in the customize menu anymore?