On the WooCommerce checkout page, if the user has credit available, it will show a notice and ask them if they want to use it.
在WooCommerce结帐页面上，如果用户有可用的信用额度，它将显示一条通知并询问他们是否要使用它。
Based on the credit available and order total, it will create a 1 time use coupon code for the lower amount and automatically apply it to the order.
根据可用积分和订单总额，它将为较低的金额创建一次使用的优惠券代码，并将其自动应用于订单。
i.e. for a $100 order and $50 credit, it would generate a $50 coupon since the order is more.
也就是说，对于100美元的订单和50美元的信用额度，由于订单数量更多，它将产生50美元的优惠券。
If the order is $25 and they have $50 in credit, it will generate a coupon for the $25 order total, and leave them with a $25 credit balance after checkout.
如果订单金额为25美元，并且有50美元的信用额度，则会生成总金额为25美元的订单优惠券，结帐后留下25美元的信用额度。
