Your device includes 12 months of membership, which start when you pair it. We do not hold your payment details, so your membership does not renew by itself.
Sign in at app.hilo.com and open the Membership tab.
In the last 3 months before your membership ends, select Extend subscription.
Complete the secure checkout. Use the same email address as your Hilo account.
The checkout link works once and expires after 24 hours. If it expires, return to the Membership tab for a new one. After you pay, your payment details are saved and your membership renews each year, shown as "Renews on". You can cancel at any time. See How to cancel my subscription?
You will not see an Extend subscription button earlier than 3 months before your end date.