Hey Rmills,
the footer area is populated via a specially dedicated widget area – please visit the “Appearance -> Widgets” admin section and add the widgets you want to the “Footer” widget area on the right.
Regarding the submenu bug – please accept my apologies, this is indeed caused by the code. I’ve prepared a fix: please download this archive, unzip it, and upload the resulting files into the theme folder (/wp-content/themes/Tokyo/), replacing the existing files. Let me know if this helps!
Sincerely,
Andrii / Satori Studio