Why this happens
Duolingo's official guidance ties cancellation to the original purchase route. A learning login and a store login are not necessarily the same email. There may also be access that did not come from your own recurring purchase, so establish the receipt and payer before making changes.
What to do
- Search the receipts for a settled Duolingo subscription payment and note the store or direct seller.
- Check the purchasing Apple or Google account, including another account you actually used at checkout, rather than only the current learning login.
- If the receipt is direct from Duolingo or the purchase remains missing, use Duolingo's official help flow with the receipt reference to locate the contract.
Check the result
Ask for the current renewal state and end date. Do not buy a second plan just to make a subscription entry appear in a store.
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