We use PayPal's Multiparty APIs (PayPal Commerce Platform) for checkout. For the 10 days, someone has been bombarding us with purchases that they later dispute. The purchase process requires a browser because of the way our payment form is configured. There's an amount of variation to each purchase that tells us they're automating a browser. Their phone support people will not talk with me, they see no indication that my PayPal account is affiliated with these purchases in any way.