I can help but you won’t like the answers.
- IPv6 support is only for your LAN.
- Engineering and Operations have not enabled IPv6 Remote Access (brokering)
I have a full IPv4 / IPv6 stack both internally and externally.
My IPv4 traffic leaves my router as IPv6 (DNS from the ISP). That works flawlessly
I cannot use IPv6 Plex.tv Remote Access even with my own domain (DDNS via CloudFlare).
At some point in the near future, my ISP will drop IPv4 support.
When that happens, I too will be cut off.
I’ve asked multiple times about this. No answer has been given.