You can email me at hackernews@saul.pw.
Mine has been disputed several times (because it changed due to name change and wasn't updated). There is a very clear mechanism to dispute that decision, and in fact that's why they ask for your phone number and/or email on the envelope--so when they want to dispute it, they have a way of contact for you to do what's necessary to make the ballot count (provisionally, only if the race is close enough for your vote to matter).
This project is an enhanced reader for Ycombinator Hacker News: https://news.ycombinator.com/.
The interface also allow to comment, post and interact with the original HN platform. Credentials are stored locally and are never sent to any server, you can check the source code here: https://github.com/GabrielePicco/hacker-news-rich.
For suggestions and features requests you can write me here: gabrielepicco.github.io