Why do you need the vendor number?
Apple's Sales Reports API requires it on every request; it identifies you as the seller. Strangely it isn't returned by the API itself. You'll find it in App Store Connect under Payments and Financial Reports, top left next to your legal name — eight digits, usually starting with 8.
Can you see my apps' source or my Apple ID?
No. You never enter your Apple ID or password. An App Store Connect API key with the Finance role can read sales reports and the list of your apps, and nothing else — it can't change prices, upload builds or touch your code. You can revoke the key in App Store Connect at any time.
Where is my key stored?
Encrypted with a customer-managed AWS KMS key, in eu-central-1 (Frankfurt). It's decrypted only for the few seconds it takes to sign a request to Apple, inside the function that makes that request. It never reaches the browser or the apps.
Are the EUR figures exact?
They're close, not exact. Conversion uses daily reference rates; Apple applies its own rates at payout, and its monthly financial report is the one your accountant wants. SalesLens is for knowing what's happening this week.
What happens after the 7-day trial?
The subscription you picked starts, billed by the App Store. Cancel in your Apple subscriptions any time before that and nothing is charged. Your account and data stay until you delete them.
What happens if I delete my account?
Your keys, your cached reports and your account are deleted immediately. There's no retention period and nothing to email support about.