the FFXIV server is fine. It is up. The issue is with that couple of routing/node got damaged in Sydney flood. The issue lie with Telstra NBN. There is nothing that SE can do about it. It is out of their control. You will have to wait until Telstra fix the route/nodes. In meanwhile, you will have to use VPN to use other route. I use Mudfish VPN and I can get in. I don't know how to use VPN with PS5. You will have to google how to do that.