It's not just newly earned ones -- appears to be all certificates. I just tried a couple of mine that were earned months back and got zero-length PDFs.
eww ! I am not going to even try downloading my certificates for some time !
There's still the notice I saw yesterday :
We are currently experiencing a technical delay in receiving Candidate exam results. We apologize for the inconvenience and appreciate your patience as we work to resolve this issue as quickly as possible. We anticipate this issue will be resolved in the next 24 - 48 hours with exam results updating in Candidate Exam History on CertView at that time.
Hemant K Chitale
Looks like the eCertificate issue may be something widespread. I'll just check with the support team to be sure they know that it is a bigger issue than a few candidates and see if they are working on it.
Certification Forum Moderator