[2023] Connection to my own local server

How old is the world? We don't support migrations over major versions and the last time I remember us having changed the authentication system where your character could be someone else has been a good while ago. Have you linked your Steam account to an SLG account or used a different account? It not saving is not surprising when the server crashes after a few minutes.

You can send your savefile and your server and client logs to [email protected]: https://github.com/StrangeLoopGames/EcoIssues/wiki/Getting-the-Eco-server-and-client-log-files-for-local-world