TextApp likely doesn't generate invoices directly.
Here's why:
In-App Purchases: TextApp subscriptions are likely handled through in-app purchases on the App Store.
App Store Billing: The App Store manages the purchase process and billing. Your payment method associated with your Apple ID is charged for the TextApp subscription.
How to Access Your Receipt:
You can access your receipt for the TextApp subscription through your Apple ID account. Here's how:
Go to https://support.apple.com/en-us/105023 and sign in with your Apple ID.
Navigate to your "Purchase History" section.
Locate the TextApp subscription purchase and download your receipt.
Additional Considerations:
For detailed billing information or any discrepancies, it's best to contact Apple's support team directly.