You entered the promo code correctly.
The discount appeared on the pricing page.
But after choosing your payment method, the final charge showed full price.
This situation usually isn’t a system error — it’s a payment eligibility restriction.
Why Discounts Fail With Specific Payment Methods
- Store payments (App Store / Google Play) override platform promos
- Wallet payments may block external coupon stacking
- Prepaid cards sometimes exclude promotional pricing
- Regional payment processors restrict discount campaigns
- Partner-issued offers apply only to direct card billing
Where The Discount Gets Removed
Most users see the discount during checkout — but lose it at payment authorization.
- Coupon validates at cart level
- Payment channel revalidates eligibility
- Store commission rules override promo logic
- Final invoice recalculates without discount
This is why the price changes seconds before approval.
How To Verify Payment Eligibility
- Switch from in-app purchase to web billing
- Try direct credit card checkout
- Review promo terms for payment exclusions
- Check regional payment compatibility
How To Prevent Promo Removal
- Apply discounts via desktop checkout
- Avoid wallet or prepaid billing
- Use the original signup payment method
- Complete billing before promo expiry
Payment method selection often determines whether a promotion survives checkout.