Hey @GBarkworth this does sound like the integration is setting something incorrectly on the frontend. HubSpot form api (which integrations use) just accepts data, it doesn't set form actions on external forms (such as redirects). So it wouldn't be possible for this to be an error thrown by HubSpot, it is likely an error with either forminator or the integration.
Do you have a link to the integration you're using? It would be good to learn more about how this is set up.
Tom Mahon Technical Consultant | Solutions Engineer | Community Champion Baskey Digitial
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I'm able to choose the correct Hubspot account but instead of redirecting back to the Forminator plugin within Wordpress to successfully complete the integration, I'm left with this error message:
Hey @GBarkworth from that error it looks to be an issue with the integration app you're using so you'll need to contact the app developer. In this case this case they have a support path outlined within the documentation you've linked to, you'll need to contact the team there to find out how they can resolve this issue as it appears to be outside of HubSpot.
Tom Mahon Technical Consultant | Solutions Engineer | Community Champion Baskey Digitial
Did my post help answer your query? Help the community (and me) by marking it as a solution.