After investigation we have determined the root cause of this to be a code issue that impacted multiple areas of our platform in our US data center. Customers may have seen this issue display in Campaign Automations, Form Submissions, Email Sends.
A fix has already been developed and we do not expect this issue to reoccur.
If you experienced an odd behavior with the platform between 9am UTC October 6 and 9am UTC October 7 and are hosted on our US data center, it may be related to this issue.