To translate “Logout”, “Your Account” you need edit the file wp-content/themes/xmarket/et-links.php.
For the cart popup please edit this file: wp-content/themes/xmarket/code/woo.php (lines 53, 106, 108).
Could you please specify where “Leave a comment” is displayed?
Cart page can be modified in the files wp-content/themes/xmarket/woocommerce/cart/cart.php and wp-content/themes/xmarket/woocommerce/cart/cart-totals.php.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.