Print on Demand! That's what I use for the easy to use Interstitial 1E physical copies.
Also, I went and made sure these were shipped today. They should be on their way!
Okay, so it's not just me, that's reassuring. Sorry to see you're having the same issue.
UPDATE : One of my orders finally came in today, so I got one copy of 1e finally in my hands. Hwoever there never was a confirmation mail or update mail, and the original mail still says "fulfillment pending" so.... Yeah, I don't know what's going on anymore, maybe it's an issue with the E-Mail system or something.