Hello @martinbarcelona
I’ve tried every possibility, As results, you can try the following:
Double-check the API call being made by your Private App to create the contact. Make sure that the isMarketingQualified property is set to true in the request payload.
Check if there are any workflows or automation rules in place that may be changing the contact’s marketing status after it’s created. In some cases, workflows or rules may be automatically updating the contact’s properties, including the marketing status, based on certain criteria or actions.
Verify if the contacts being created through the Private App are meeting the marketing contact criteria in HubSpot. For example, a contact must have a valid email address and be associated with a company record to be marked as a marketing contact.
I hope this helps!