A few quick answers
How do I cancel?
Manage your subscription anytime in your Apple account: Settings → your name → Subscriptions.
How do I delete my account?
In the app: Settings → Delete account.
I'm under 18, how does parent approval work?
During setup we send a parent or guardian a one-time link to approve. Once they tap it, you're in. They don't get access to your conversations or tasks.
Sokira