We have removed the client-sided anti-cheat (ZAC) from Zonix Client. ZAC was clearly a rushed project, and it should have never been released if it wasn't ready. For now we will focus on developing other aspects of the client such as the design, mod manager, profile system, and friend system. Once we are sure ZAC is ready for all players to use without issue, we will release it.
Your client will automatically update, so no need to re-download the launcher.
Thanks for understanding.