Have you installed Hubitat Package Manager? If not, this will make locating and installing user packages infinitely easier. Once you have HPM installed, you can easily search for and install the Advanced Zooz Drivers.
HPM Info including installation instructions: [RELEASE] Hubitat Package Manager (HPM) -- HubitatCommunity
Welcome to Hubitat. Many (Most?) of us are SmartThings refugees. Five years ago I switched and things are much faster and more stable. There's a learning curve, but stay here on the community and you'll pick things up quickly!