Hi there so I am using HubSpot as my VOIP provider and I have the Cisco 8865 phone but when I turn it on it says I need a QR Code, I asked HubSpot and they said to use Cisco Provisioning Portal But I cannot find it anywhere. Can you help?

Hello, I bought a used cisco 8865 phone off of ebay and when it came it was still registered to the company that used it before. So I  did a Factory reset of the phone and now it is asking me for a QR Code. What can I do?