Ok leave APi or POS aside. I have installed a print Manager for WooCommerce which has nothing to do with any POS or API but still it doesn’t show addons. When i print any WooCommerce Order on Paper:
The Receipt show somehting like this:
D?nerteller × 1 €9.00
_addon_items Array
Lahmacun (??) × 1 €5.00
_addon_items Array
Look at that array seems something is getting called but not getting the actual data. All of the products above have atleast 3 addons added but it still doesn’t get printed. Again it has nothing to do with API or POS. i am just printing the order directly from WooCommerce. That clearly seems this plugin problem it’s not working with anything.