I wanted to buy your plugin Print Invoice, Packing Slip, Delivery Note & Label Plugin for WooCommerce but after testing it demo version there were few issues.
1) After selecting order and clicking Print invoice from bulk actions, the print screen opens up in the same window. This is extremely annoying as we have to open the woocommerce backend again.
2) I have previously used the official woocommerce print invoice plugin by skyverge but have to move away as it is causing some performance issues.
The good thing about that one is that it displays a tick mark on the order summary page after an invoice is printed, This makes it easy to keep a track on if the invoice was printed or not.
The official woocomerce invoice plugin also have options of Email Invoice/Packing slip in bulk actions dropdon’t have that feature.
Let me know if you plan to correct these issues soon else I would be looking for some other plugin alternate