You should have an email that has a receipt number. You can use that on the phone or via email with PayPal to get the transaction ID, which is what you need on the donor support post for Garnet, along with your SteamID.
https://www.cyberpowerpc.com/store/item.aspx?key=HS-203-101. These are my old headphones. Even for the price they work amazing and probably would lasted me wayyyyy longer but my Dum ass chews on shit that has good feeling
https://imgur.com/a/rLQAQrC