Hi Rod. I don’t see your attachment. I had a similar issue with an AT&T wireless hotspot from netgear. I was not able to get it resolved as there are too many NATs (network address translations) between your node and the outside world. Someone with better networking skills than I may be able to offer some suggestions similar to these from the hamvoip site https://hamvoip.org/howto/Configuration_of_a_Reverse_Tunnel.pdf
hope this helps - I never got around to trying it…
well since you did have it working, what was the trick? was it a wireless AT&T or like a home connection? If you figured out the wireless NAT, I’d love to know.