Plan a WooCommerce loyalty and rewards program structure

Plan the loyalty and rewards program for a WooCommerce beauty store:

STORE: [Verbena Skincare], average order value [$52]
EARNING RATE: [1 point per $1 spent]
REDEMPTION: [100 points = $5 off, redeemable in $5 increments]
BIRTHDAY BONUS: [50 bonus points on the customer's birthday month]
TIER IDEA: [a VIP tier for customers who spend $300+ in a rolling 12 months, unlocking
free shipping on every order and early access to new launches]

Plan the program covering:

1. The base earning and redemption math, stated so a customer can do the mental math
   quickly (roughly 2% back in store credit at the standard rate), since a program
   whose value is hard to estimate at a glance gets ignored even if the actual value is
   reasonable.
2. Points expiration policy: state a reasonable expiration (for example, 12 months of
   account inactivity, not points expiring a fixed number of days after being earned),
   since aggressive expiration windows feel punitive and short-dated points earned right
   before a slow season effectively expire unused, which reads as bad faith.
3. The VIP tier's qualifying spend, what it unlocks, and how a customer is notified when
   they cross the threshold, since a tier that exists silently in the backend with no
   customer-facing acknowledgment doesn't produce the status-driven repeat purchases
   it's meant to.
4. The edge case most programs miss: what happens to points when the qualifying order is
   later returned or refunded. If a customer earns 52 points on a $52 order, redeems 100
   points (from a prior order) for $5 off a new order, then returns the item that earned
   those points, the program needs a clawback rule (deduct the points earned by the
   refunded order from their balance, and if the balance goes negative, net it against
   future earnings) or the program can be gamed: buy, redeem, return, keep the reward.

Replace the bracketed store name, rates, and thresholds with your own program design.