As per this thread closed without answer: https://community.tp-link.com/en/business/forum/topic/610796

I have same identical problem. No way to get remote access: ISP is Starlink, ipv4 is behind CGNAT so no chance, ipv6 works , pingable from outside but no chance to access remotely, remote management has been enabled, subnet/mask 0.0.0.0/0

No-ip over ipv6 configured perfectly working.

I came to the conclusion that remote access is possble only via public ipv4, can we add via ipv6 ?

Thank you !

Edit: of course I know that 0.0.0.0/0 is not the best way for security reasons. It's just a test configuration to see whether it works.