Clients are receiving phishing emails from Jotform

This is an urgent concern: Our clients are receiving phishing emails from Jotform. As a result, the client has had to block any Jotform site usage. This is COMPLETELY blocking our business procedures. Please let us know (1) why this was happening (2) what we can do to stop it and (3) how we can prevent this scenario in the future. 

Please provide a screenshot of the email or the form emailed to you from JotForm. 

To post a screenshot here in JotForm, please follow this guide: https://www.jotform.com/help/438-How-to-Post-Screenshots-to-Our-Support-Forum

Thank you.