Why this happens
The same learning account can be used on different devices, so today's phone is not reliable evidence of where the paid plan was bought. Apple, Google Play and direct web purchases can have different management routes. First locate the payment; then use the matching subscription controls.
What to do
- Find the latest Duolingo receipt and identify the seller and purchasing account.
- For Apple or Google Play billing, open that store's subscriptions under the purchasing login; for direct billing, consult Duolingo's account and official cancellation guidance.
- Complete the matching cancellation and retain its confirmation and access end date.
Check the result
If the plan does not appear, check the purchase account rather than starting another trial. A missing entry in one store is not proof that no paid subscription exists elsewhere.
Official sources
Check the linked provider instructions for your plan, country and purchase channel. This independent guide does not cancel a subscription for you.
Full Duolingo cancellation guide