also success with getting the PTA via email.

I found that the long-gun more-than-1 registration wouldn't work. had to do one-at-a-time, several times. Also, the space for "passport, naturalization..." couldn't be left blank, so I put "US citizen" in there, that seemed to work.
So since I have several emailed registrations, of course, just my luck, one of the passwords was incorrect for the emailed registration pdf, they had a lower case/upper case error. Luckily I was able to guess it. success on that, at least it didn't self-destruct with all the wrong guesses.

I submitted some pistol on-line registrations, 3 days later, still waiting. I do remember seeing somewhere it could take up to 5 business days to process. it hasn't been kicked back for corrections or errors, so i guess that's a good sign? Maybe they're waiting for the FFL's filled-in PTA back-side? I didn't see provision for attachments, so I couldn't send the jpg of the pic I took of the filled-in back-side. If I'm still waiting, and we're supposed to register within 5 (calendar) days of acquisition, not sure what kind of limbo i'm in, or purgatory.