WhoIsThis has two separate billing systems, and that decides where you manage your subscription:
- In the app → billed by the App Store (iPhone/iPad) or Google Play (Android). Manage and cancel it in your store account.
- On our website → billed by us; manage and cancel at https://whoisthis.io/cancellation.
If you can't find a subscription in one place, check the other. Charges from Apple/Google look different on your statement than a website charge.