Not supporting IPV6

[eccorgame]

Hi there,
Recently my network was changed that I can use only IPV6 to get to my NAS and PC and there is no turning back to IPV4.
I am using qnap's DDNS service and running NUT service on my PC. Everything works fine while I can connect to NUT using Tinfoil on Nintendo Switch outside home with IPV4.
But now I can't connect to NUT when I am outside home using IPV6. I tried to forward TCP6 and UDP6 port to PC and the microsoft remote desktop control works fine but not for NUT.
I also try installing shawly/docker-nut on qnap and it works fine in Intranet but not in internet. Could you please advise? Thank you very much.

[eccorgame]

try ipv6 address in Config.server.hostname
maybe ::

try again but not working, when you wrote your domain in the server address, change '0.0.0.0' to 'xx.xx.com', start Nut again, the ip address still shows the local one '192.168.1.xx'