I know FormsCentral is being decommissioned (which by the way is a HORRIBLE IDEA!), but I logged in so I could download my forms and they're all gone! I only have one user id and I created all these forms, so they weren't shared from anyone else. One of my form URL's is: https://adobeformscentral.com/?f=zqd4HsgoAz8hSOD4QlDhCg
The link you provided is to the form to be filled in, which is closed. All forms were closed last Tuesday in preparation for ending the service on July 28th. To see your form and response data you need to log into formscentral.acrobat.com with your Adobe user ID and password.
Thank you! I found them all!
I still wish FormsCentral wasn't leaving, though,