To get the Platform web interface hostname:
kubectl get service platform -n uepe -o jsonpath="{.metadata.annotations.external-dns\.alpha\.kubernetes\.io/hostname}"
If you wish to connect Usage Engine Private Edition from the legacy swing desktop, do note that after added the instance via Platform FQDN hostname in desktop launcher, you need to modify pico.rcp.platform.port property value to port 6790 at Configuration > Properties tab.