It shows full size report on screen. When you hit Re-print button, it should print to printers you selected in printer local settings.

https://support.woopos.com/wp-content/uploads/2017/04/woocommerce-point-of-sale-pos-reprint-receipt.jpg

https://support.woopos.com/wp-content/uploads/2017/03/woocommerce-point-of-sale-pos-setup-multiple-printers-for-receipt.jpg

Reprinting Transactions