Zerotier and Home Assistant

Trying to use Zero Tier to connect to Home Assistant remotely. I currently used Zero Tier to connect remotely to Blue Iris and it works great. Installed the ZT add-on to Home Assistant and tried to connect and cannot without being on Wifi (LAN). On LAN, I can use the IP assigned by ZT to connect just fine, but when using Mobile Data (WAN), it just hangs and does not connect. What am I doing wrong? As I said before, I have been using WAN to connect ot Blue Iris without any problem for a year or so. I even tried creating a second network thinking there might be a conflict between HA and Blue Iris. Any help would be greatly appreciated!