No automatic renewal
Each period is a separate crypto Invoice, so Antick never charges you automatically. To continue, pay a new Invoice before your plan ends. Your Current Plan card shows the plan, its status and the Renew and Upgrade buttons.
Renewing the same plan
If you renew while your plan is still active, the new period starts when the current one ends. The Order Summary says so before you pay: "This billing cycle will be added on top of your remaining subscription time."
Upgrading or switching
When you upgrade to a higher plan or switch to another plan, the new plan starts when its payment is confirmed. Your previous plan ends at that moment, and its remaining time and payments are forfeited: they are not converted, not carried over, not refunded, and do not resume later.
Checkout warns you twice before you continue: once that upgrading ends your current plan, and again that its remaining days will be lost. Choosing a lower plan shows a similar two-step warning that your current plan will end immediately.
Upgrades and refunds
Paying a new Invoice, including a renewal or an upgrade, ends your right to a refund on earlier Invoices. If you have a refund request still open, checkout shows "You have a refund in progress": paying the new Invoice cancels that request, and this cannot be undone.
When a period ends
When the active time runs out, your account returns automatically to the Free Plan. Your account data is not deleted. You do not go back to an earlier paid plan, because that plan was forfeited when you upgraded or switched.