Plugin validation not respecting CF7 fields validation

Hello.
I have a form with 5 fields, all of which are required by CF7, but it turns out that this integration plugin is sending the submitted data, even if not all the fields were filled by the user. It seems that, as long as the user enter the email, and click on Submit, even if CF7 is showing the error messages for the missing fields, the email is being sent to Hubspot anyway. What can I do to setup this plugin so that it sends the submission to Hubspot, only if all of the fields are filled by the user, not only the email?

I tried using the functionality called “Opt-in Condition” by selecting “{{Field}} Is Not Empty” for each of the required fields, but the info is being submitted anyway even if all of the fields (except email) are empty.
Thank you.