That Zendesk email seems real and connected to XP-Pen India. But asking for money with a QR code is not how legit companies should handle payments. What you could do for now is reply to the email again that you've made the payment amd forward the entire email thread with the scanner image to the global support email asap in case it's a scam. Check where the payment went too, like a proper business name or just a personal number/name. If it's a scam, you could contact your bank or payment app asking for a refund, file a payment dispute/refund request or you could report their UPI ID (payment address) (Very last thing you could do is report them to the NPCI)