Hi there, I am ROllerozxa. I am the main developer of principia-web and I am the one who runs this site. I now also work on the Principia open source project and whatever else relevant (you can probably see my name on practically all wiki pages). I occasionally also create levels, most which I post to here.
If you'd like to privately contact me, send me a private message here or DM me on Discord, my handle is
ROllerozxa#7609. Also feel free to ping me in the Principia Discord server if you need anything.