woocommerce 3 update

hi,

after woocommerce version 3 update, we noticed there are deprecated functions from error logs that might relate to this plugin, and would like to verify if its correct that the plugin causes the issue, or it might be other plugins. we already tried to troubleshoot and WC fields factory plugin was on our list to check for possible cause of error.

the deprecated functions are,
woocommerce_add_order_item_meta

Thanks.