First and foremost, my source code is NOT public, so I'm not really sure where you're getting your information, but it's false. Also, to claim that I falsely advertised would be to claim that I said it was 100% accurate, which I did not.
1) Cookies are the only way to store the information without requiring users to create an account on the site and store the information in my own database. So, for security, I chose cookies.
2) I have a menu at the top, the main page is for update announcements.
3) Thanks.
4) Better to speak of the functionality of the simulator, rather than the empty space, don't you think?
5) I have donation requests on the main page and the simulator page, because those are the two most used landing pages. (simulator page due to generated links).
6) I pay for this site out of my own pocket. It also took quite a while to code it. The ads help to pay for the site itself. People on Twitch ask for donations during their videos in an effort for compensation for their time and energy spent on their feed. It's really no different.