Thank you so much for your quick responsiveness. Here is the debug log from submitting the form.
2018-08-16 13:10:02.953464 – DEBUG –> GFFeedAddOn::maybe_process_feed(): Checking for feeds to process for entry #383 for gravityforms-hubspot.
2018-08-16 13:10:02.964086 – DEBUG –> GFFeedAddOn::maybe_process_feed(): Starting to process feed (#1 – HubSpot Partner Feed) for entry #383 for gravityforms-hubspot
2018-08-16 13:10:03.308311 – ERROR –> BigSea\GFHubSpot\GF_HubSpot::process_feed(): HubSpot caused an unknown error for “Request for Partner Information (Gravity Forms)” [cb8cb946-9af8-41fe-afa4-edd65b38a590]: HTTP/1.1 400 Bad Request
