I hate that for you. I am so glad that my shop is on top of things. I got the email from SilencerShop to sign my stuff via Docusign on a Monday, approximately 17 days after purchasing the suppressor, which considering it had to be Form 3'ed from the distributor (who actually wasn't SS) to my dealer is pretty good time. On Wednesday I got a call from my dealer that I was ready to certify. The first attempt was made at about 1:30 eastern time and while I could get in to the session, it kept freezing up. My dealer stated that it was probably because of the demand at the time (lunch time in Central land), so she suggested she call me back at 6pm if I was OK with that. I was, and she did. 5 minutes later, I put my pin and and within another 5 minutes I got the email from the ATF that my Form had been submitted.
For anyone in Upstate South Carolina, the dealer is Upstate Armory Group. They know what they are doing and they will eForm your Form 4 through SS even if the suppressor doesn't come from SS.