Missing Form ID

Hubspot is no longer receiving submissions from our form on wordpress.
We are using Contact Form 7 v5.2 & Contact Form 7 – HubSpot v1.1.0

In debugging, I noticed that the cf7_hs_integration() function searches for the form id:
if ( isset( $request[‘_wpcf7’] ) ) {
$form_id = intval( $request[‘_wpcf7’] );
}

But this ‘_wpcf7’ array key does not appear to exist. When I output the whole $submission object,
I see it here instead:
WPCF7_Submission Object
(
[contact_form:WPCF7_Submission:private] => WPCF7_ContactForm Object
(
[id:WPCF7_ContactForm:private] => 5