Hello this is a visual bug which has will be fixed in the next release.
Meantime, try changing your menu type to the vertical one and back to the horizontal, the options should appear.
Anyway to erase the options, which are saved in the db, and they persists even when you erase the theme files, you have to delete the db row.
In wp_options table, tc_theme_options.
You can also run *once*:
https://codex.www.ads-software.com/Function_Reference/delete_option
delete_option('tc_theme_options');
meaning you can put it in an executable php file (child-theme functions.php or even parent-theme functions.php or in a plugin, are good candidates).
Once deleted the option, you have to remove that line.
Hope this helps.