Hi, i was trying to SE a Logitech controller and i got this email: In translation it says: Hello Bruno, Through the information you have provided, we can verify that there is a defect with the product, so it should be replaced if it is under warranty. In order to prove this, we need the final purchase invoice to attach to the case. Amazon provides final purchase invoices based on the article you find on the site's help center: Https://www.amazon.co.uk/gp/help/cus...deId=201238260 Please refer to the article and, depending on the purchase you made, try to download or get the final invoice. If you have problems, I recommend contacting customer service. We appreciate your cooperation and we look forward to your response in order to assist you. What can i do? Can anyone help me? Thanks