WooCommerce v. 3.4.6. had a bug, due to which even superadmin at WP multisite saw only ‘customer’ role. That bug was fixed by WC developers now. Only shop_manager role is limited by ‘customer’role by default. WooCommerce offers custom filter ‘woocommerce_shop_manager_editable_roles’ which allows to change this default behavior without any version rollback or any kind of a hack applied to WooCommerce source code.
This filter is documented here and mentioned at this topic too.
I think having this solution in the mind there is no need in any intervention to this issue from User Role Editor Pro.
