Verify this option is checked under PRO2PDF→SETTINGS “Enable automated layout creation for new field maps”
If checked, then verify the PDF field names match the Formidable Form field names, exactly.
If both are verified, we need to troubleshoot your PDF form and/or the plugin installation to determine the issue. If possible, upload the PDF to this form and include login credentials if you want us to login.
We remain at your service.