PTT Outdoor can help locate proof of purchase if you used a valid and active account with them. They may be able to track down your order number for you. Purchases not posted to a PTT Outdoor membership are required to provide proof of purchase for all transactions. They may be able to locate proof of purchase for online or phone purchases not posted to a PTT Outdoor membership via email, Whatsapp or Messenger. However, you may still need to provide your valid email address and a valid phone number with your full name for them to check back into their system.