It sounds like your neighbor was the only hiccup. That last few places I've lived have not been tight communities where everyone knew exactly who lived in each home. I just made a new NextDoor account a few weeks ago with a totally different name and e-mail address(I just moved). ND sent a postcard to my physical street address with a code to confirm via the app. I confirmed, immediately was signed in and went to my profile to make sure that my full street address wasn't visable to others on ND. You can have your profile only show the street name so unless you live on a street with very few people who's gonna know who has joined under the name you use? Even if I used my real name I'd never, ever show my street number, that's crazy. Also, the last two neighborhoods I lived in still have my ND accounts active and I could sign back in any time. For you, I'd say just use a different email and different name and wait for them to send you the postcard to confirm. If you want to throw your neighbor off your track further use a name of the opposite sex. 😂 Be sure to immediately take your street number off the profile though.