Check the warranty start date first:
On the website:
On Android/iOS:
If it's been past that date, don't hesitate to file a refund request by selecting No on the Have you received your order? tab on the same page. You'll be asked to enter the email address our reply will be sent to.
Yes, in case:
• The warranty has expired. The warranty is active for 14 days since the abovementioned start date — make sure to contact us within that period.
• Your parcel was marked as delivered by the shipping company.