Hi lidertest, you should be seeing the Categories Export Fields meta box appearing above Export Options, this is likely a jQuery conflict within your WordPress WP Admin. What e-Commerce Platform are you using (WooCommerce?) and what version of our Plugin is installed?
Try doing a full refresh/browser cache reset by holding CTRL + F5 to reload that screen, it fixes it most of the time alternatively you can contact us on Premium Support to help identify what other WordPress Plugin is causing a jQuery conflict/if we are to fix this though it is outside our support terms.
