You can redeem your purchase from App Store to official license.
Please confirm the email address you are currently using so that you can retrieve the license in the future.
About Order ID: Please follow this guide to find the purchase record of Manico, then in the detail page, you will see the Order ID.
View your purchase history for the App Store
You can also check an email from [email protected] that with the title 'Your purchases from Apple' to get the order ID.