After putting it to community vote, the difficulty has been set to Hard. If you're having trouble, reach out! There are many experienced players wanting to help. Not sure what difficulty does? Check out this page of the wiki where it is detailed exhaustively.

Despite how much we want to, we shouldn't make the seed public. There are far too many downsides to justify the few benefits it brings. Since this is something we can never undo, we have to take our time and consider this carefully. Our stance may change in the future, but for now, you'll just have to explore the world or do your own tests for slime chunks.

Most mods or datapacks alter the game too much to consider adding them to the server. As stated above, we want to keep the game as vanilla as possible. That said, it never hurts to ask Gunny what he thinks or feels about any given mod or datapack. Feel free to approach him! Just don't get your hopes up.

Never! It's been the same world since the server launched June 18th 2022. This is a long term world where your builds will persist. That said, Gunny does manually trim the world each time there is new content or world gen added to the game. No need to worry, he is very careful and methodical.

A news post was written back when this server was revealed to the public on June 17th 2022. It covers most everything. Hopefully it has the answers you seek. If not, feel free to ask Gunny.