I'm not sure why I can't reply to this post, so starting one here. We just went through a pain in trying to submit the N-400 through the USCIS online application. It was very frustrating and nerve wrecking. The attachments kept disappearing but we finally got through to the final Review Information page and saw all the attachments listed at the bottom of all our other information we were reviewing and validating to be correct. I still don't 100% trust that they truly got attached though. Does anyone know if you can go later and validate that they did go through OR attach further documents AFTER submitting the N-400 online form? The site says we have to wait 72 hours before we can see any status.. but I don't know if that includes opportunity to verify the attachments made it.. or give the ability to add additional documents to submit. I'm hoping worst-case scenario (if they didn't go through with the application) that they will just require to bring it all physically to the interview... or ideally submit it online somehow. Thank you for reading this far.. hoping someone can shed some light and calm our anxiety a bit!