My website is connected to Hubspot (sicne last week) and at first I would receive notifications from Huspot about new emails entered (on our newsletter registration box), but now it does not work anymore. I did reset the plug gin, but still not working.
Notifications based on form submissions is managed through the form itself. I recommend going in to edit the form in question, and view the settings area. Within the Submission Settings, you can choose who should receive notifications of new submissions.