Fixes WooCommerce QuickPay order_id validation error by tweaking order_id.
Based on https://quickpay.net/integrations/woocommerce/
Install the ZIP from WP-Admin -> Plugins -> Add new.
Orders shown to QuickPay in the following format: Order-ID-QP-XYZ
- ID = Order number from WooCommerce
- XYZ = Random number between 0-999