I am using the PHP sdk to fetch, sync or update data.
When I use the email to get data from hubspot it some times throw exception and the process fails (Some times the error is - "No records found .."). We are using webhooks for this process. When a for submits we make that webhokk call with raw input then fetch the data.
I'm not sure I'm entirely clear on your situation. Can you give me an example of a raw request you're making to HubSpot, and the error you're getting back?