Troubleshooting Vapi.ai Integration with Hubspot: Contacts and Tickets Created but Associations Not Linking

Hey Folks Has anyone set up an agent using vapi.ai? Here's my use case. The agent is taking inbound calls to filter out solicitors and takes businesses inquiries. I've used a Hubspot private app to connect with Vapi. If the Vapi agent identifies a genuine business inquiry, it will create a Hubspot ticket, create/update contact, log a call on contact's activity. Here's the issue. The agent is creating records(contact, ticket, activity) but it is failing to create associations. I'm not sure if something is wrong with the private app scope or my my prompt. Would highly appreciate any help/suggestions P.S first time vibe coder here