Your plan and billing
One plan, a seven-day trial, and where to manage the subscription.
AODex is one plan. There is no free tier and no ladder of feature-gated levels — the trial is seven days, takes no card, and turns into the same plan everyone else is on.

What you are on
The billing screen shows your current plan — Early Access during the early access period — alongside Your current usage, including Messages Sent.
If usage will not load you will see Unable to load usage data; that is a display problem, not a billing one.
Managing the subscription
Manage subscription & billing opens your AOCyber account, where the subscription itself lives: payment method, invoices and cancellation. View your plan, billing history, and subscription details.
That is also where to find your plaintext AOCyber API key if you need it — it is deliberately not repeated in AODex.
Changing plan
Upgrade Plan where an upgrade applies to your account. Because AODex is a single plan, this is mostly about moving off the trial rather than choosing between tiers.
The trial
Seven days, no credit card. During onboarding you will have seen Start Free Trial under Choose Your Plan; if you backed out of checkout, AODex says Checkout was canceled. You can pick a plan again below and lets you restart.
Cancelling is done at AOCyber, not in AODex. Follow Manage subscription & billing. Your data is unaffected by a cancellation until the subscription actually lapses — and you can take all of it with you first, see Export your data.