The LXC #101 was created some time ago (debian 12, turnkey fileserver, 18.0-1). The last time it was used was in July and I am not sure if I had tried to integrate it with #106 NextCloud; I may have. So from here it looks like there was a try, but I need to review what steps were taken to set it up. Also what is the current setup of the Proxmox drives: 2@1TB and 2@4TB drives in the case.
Update: I was able to get it working again and this time as well as connect LXC #101 to Tailscale. I was then able to pull up a Z drive on my laptop. Now I can access this Z drive from anywhere.