Restore purchases
Open Invoice Maker, go to the upgrade or settings screen, and tap Restore Purchases. Use the same Apple ID that made the purchase.
App support
Send a payment-ready invoice PDF from your iPhone in 60 seconds — with saved clients, line items, tax, and a Sent/Paid tracker — for $19.99 once instead of $35-per-month QuickBooks or $9.99-per-week App Store traps.
Open Invoice Maker, go to the upgrade or settings screen, and tap Restore Purchases. Use the same Apple ID that made the purchase.
Apple manages App Store billing. Open iPhone Settings, tap your name, choose Subscriptions, then select Invoice Maker.
Include your device model, iOS version, app version, and the exact action you were trying to complete.