The checkout page does not contain footer and prefooter area because of marketing concept which is tested by woocommerce users and checkout page is designed that way for customers better expirience. It keeps their attention on sales process.
We will add the feature to switch footer on and of in our future theme updates. Hovewer you may create childtheme and put your customizations there.
The second option we suggest to you in case it is cruxial to have footer enabled is to create childtheme: https://codex.wordpress.org/Child_Themes. Also search your theme download package to get childtheme files and copy them via ftp into the wp-content/themes/*child_theme*. Then copy original theme file for checkout page on ftp like follows: *yorsite*/wp-content/themes/xstore/woocommerce/checkout/checkout.php to childtheme/woocommerce/checkout/checkout.php and make following changes in it using text editor such as notepad:
remove && !is_checkout on line 11 and line 26. After changes line 11 should looks like: <?php if( ( ( function_exists('is_checkout') ) || ! function_exists('is_checkout') ) && $custom_prefooter != 'without' && is_active_sidebar('prefooter') ): ?>
And line 12: <?php if( ( function_exists('is_checkout') ) || ! function_exists('is_checkout') ): ?>
It will enable footer on all pages including checkout page too. Please reply us after changes.
