RorNet was updated to 2.45 in the latest dev builds, but currently, no servers are running 2.45. To play multiplayer, you'll need to either use a dev build prior to the RorNet update, switch back to the latest stable release, or host a 2.45 server.
We wanted to give you a quick update on why the recent XenForo update was necessary. Our previous XenForo version was running on PHP 8, which has reached its end of life (EOL). This meant that we couldn't update our server distribution without also updating PHP. To ensure continued support and...
No bother at all! We're actively working on resolving the issue with the repository, and we'll have it back up and running soon. Thank you for your patience and understanding.