IPv6 keeps dissapearing

[Starburst]

It happened today again... When I checked the website with a browser, it went to the default page.

Looked at the vhost conf files, and the IPv6 that was manually entered was GONE, AGAIN.   

Running CWPpro 0.9.8.1026 on CentOS 8.3.2011

[Sandeep]

well you need to create your own custom template and apply it to your user domains, in this way changes will be retained.
http://wiki.centos-webpanel.com/webservers-vhost-templates

[Starburst]

well you need to create your own custom template and apply it to your user domains, in this way changes will be retained.
http://wiki.centos-webpanel.com/webservers-vhost-templates

I see "%ip%:%apache_port%"

Where can I find what to put to IPv6?
Would it be - [%ipv6%]:%apache_port%

[Starburst]

Did the custom template, after restarting, the IP vanished again.
So I hard coded them into the template.

Problem is, I can access the IPv6 OK, but others can't.

I tried to even disable csf/lfd and Mod_Security to see if there was a config problem.
There are no other firewalls in place.

Others still can not connect to the IPv6.

I'm out of ideas now.