Interestingly, while @RBoy and @maddie are helping me sort out my issues with their driver on both of my V2 and V3 hubs, I tried again today to pair the same failed zwave devices mentioned in this thread with my V3 hub. My Aeotec Extender 7 paired instantly today. One of my Zen34 switches paired instantly. The Ring 2G Keypad pair instantly (but with the same loading status message due to some capabilities that fail to load behind the scenes, on both hubs apparently based on CLI logs). My 2nd Zen 34 switch took a couple tried to pair correctly.
So, seems like things are getting back to normal with my system besides some weird account/hub issues that only the ST support team are able to sort out, hopefully without deleting and recreating an account.
Have a couple more Zen34 switches to get paired but working on a Zwave repair, first…