While translating the extension “Checkout Manager” i found a typo issue in your code.
In /tco-woo-checkout-editor/includes/tco_woo_checkout.woo.checkout.admin.php
on line 76
you have unwanted spaces in the domain string!
And i found another issue in generating the field list for other fields.
In /tco-woo-checkout-editor/includes/tco_woo_checkout.woo.hooks.php
on line 480
you wrote that you “check if value exists for order”. But you didn’t do a check! That’s result that empty fields are also been returned. Could you please add a check for empty fields or give us at least a hook to check by self?