Having all of our landing pages show up in lead generation reports, even external ones


Currently we have on our hubspot dashboard a report that shows how landing pages are performing for lead generation.


The thing is that this report only shows landing pages that are a built inside hubspot. We have a lot of other pages on our custom website that integrate forms using the backend forms API endpoints. We are seeing these submissions but we can't integrate everything into a single report that allows us to see all of our lead generation sources and how they are performing.
Because of how our website works we have no choice but to use the backend API for form submissions since we perform submission validation on the backend.
Is there a way to have this report on our dashboard integrate all our lead generation sources?

HubSpot updates