MacOS Ventura 13.4 "missing port and zerotier-one.port not found"

Mac M2 Max 14" on migration from i7 Macbook Pro. ZT has not worked on new machine at all.
Uninstalled all previous versions, installed latest from ZT website.
hanging “waiting for ZeroTier system service …”
“sudo launchctl list | grep zerotier” returns nothing
zerotier-one.port file does not exist in the /Library/Application Support/ZeroTier/One directory.
Tried uninstalling and installing older version of ZT - no joy
Reinstalled latest - nothing
“sudo lsof -i :9993” - nothing

Anyone else having trouble ?