Hi I put the plugin in debug mode, and this is what i got:
I tried to unmark the Order Id filter field but it seems not to work, so I put a range from 0-9999
stdClass Object
(
[cron] => 0
[scheduled_export] => 0
[start_time] => 1525342816
[time_limit] => 300
[idle_memory_start] => 2
[encoding] => ISO-8859-1
[delimiter] => ,
[category_separator] => |
[bom] => 1
[escape_formatting] => all
[header_formatting] => 1
[limit_volume] => 500
[offset] => 0
[type] => order
[description_excerpt_formatting] => 0
[fields] => Array
(
[_ywpi_invoice_date] => on
[billing_first_name] => on
[billing_last_name] => on
[billing_company] => on
[_billing_nif] => on
[billing_address_1] => on
[billing_postcode] => on
[billing_city] => on
[billing_country_full] => on
[order_subtotal_excl_tax] => on
[purchase_total_tax] => on
[purchase_total_tax_rate_74] => on
[purchase_total] => on
[_ywpi_invoice_path] => on
)
[export_format] => csv
[args] => Array
(
[order_brand] =>
[order_product_vendor] =>
[order_delivery_dates_filter] =>
[order_delivery_dates_from] =>
[order_delivery_dates_to] =>
[order_booking_dates_filter] =>
[order_booking_dates_from] =>
[order_booking_dates_to] =>
[order_voucher_redeemed] =>
[order_order_type] =>
[order_status] => Array
(
[0] => wc-completed
)
[order_dates_filter] => manual
[order_dates_from] => 01-04-2018
[order_dates_to] => 30-04-2018
[order_dates_filter_variable] => 0
[order_dates_filter_variable_length] =>
[order_billing_country] =>
[order_shipping_country] =>
[order_user_roles] =>
[order_coupon] =>
[order_product] =>
[order_category] =>
[order_tag] =>
[order_ids] => 0-9999
[order_payment] =>
[order_shipping] =>
[order_items_digital] =>
[order_items] => unique
[order_items_types] => Array
(
[line_item] => line_item
)
[order_flag_notes] => 0
[max_order_items] => 10
[order_orderby] => ID
[order_order] => ASC
[product_image_formatting] => 1
[gallery_formatting] => 1
[limit_volume] => 500
[offset] => 0
[encoding] => ISO-8859-1
[date_format] => d/m/Y
[order_customer] =>
[order_custom_meta] => Array
(
[_billing_nif] =>
[_wcpdf_invoice_number] =>
[_ywpi_invoice_path] =>
[_ywpi_invoice_date] =>
)
)
[filename] => export_order-2018_05_03-12_20_16-88498331
[idle_memory_end] => 2
[end_time] => 1525342816
[columns] => Array
(
[0] => Ywpi invoice date
[1] => Nombre
[2] => Apellidos
[3] => Empresa
[4] => NIF/CIF
[5] => Dirección
[6] => Codigo Postal
[7] => Ciudad
[8] => Pais
[9] => Subtotal
[10] => Impuestos
[11] => Order Total Tax: RECARGO EQUIVALENCIA 5,2%
[12] => Importe Total
[13] => Ywpi invoice path
)
[total_rows] => 0
[total_columns] => 0
[data_memory_start] => 2
[order_ids_raw] => Array
(
)
[data_memory_end] => 4
)