Monitoring - Even after investigation we have still no clue what caused the server issues. But since we restarted the server and killed all games anyway, we also made some security updates and some emergency backups and also made made some server-side configuration changes.

The issue might occur again. We don't know.
In order to get rid of some known performance issues the minimum client version was set up to 1.4.6.
Jun 29, 23:10 UTC

Investigating - We are currently investigating this issue.
Jun 29, 20:52 UTC