I have to chime in unfortunately that I appear to have been caught in the "blip".   I thought I had until 2/1 to back up my PDI, but it appears to have disappeared.   I luckily didn't lose too much, but even when I try to request a new one, it says "Join Waitlist" - only to disappear from the waitlist if I refresh the page a few times.   Not sure what happened, but this is a heads up to everyone to back up your PDIs right now.