Sorry to hear about the trouble. This can happen if you are not signed in with the correct Adobe ID using which the documents were created. So please ensure that you are signed in with the correct email address. If you are already signed in with the correct Adobe ID, please check if you are able to see the documents here: https://assets.adobe.com/cloud-documents
Thank you for confirming. We'll need to troubleshoot this on a remote session, so please contact us directly using this link: https://helpx.adobe.com/contact.html