If you are using Scanova as a customer and have agreed to our terms of service, you do not need to sign an additional Data Processing Agreement. As of May 25th 2018, our user terms of service include a provision to ensure compliance with GDPR.
If you are a customer who needs further documentation of compliance with Scanova acting as a Processor (for example, as a customer who collects and processes the end user's data via the Lead Generation feature through Scanova) you can sign our DPA as follows.
Here is a sample of what our DPA looks like: Download Sample DPA
You may email us at firstname.lastname@example.org for further information, or refer back to our detailed GDPR help page for common questions and clarifications.