RT-AX58U wireguard ipv6 problem

[mmaaxx33]

Hello,
I am setting cloudflare warp as a wireguard VPN client on AX58U.
I have tested config on my laptop and it works great.
Then I need to fill the info to the ASUS page, but I have a problem with Address field. In particular ipv6 address wouldn`t fit in there.
It does work with just ipv4, but I am looking for ipv6 to avoid captсhas all over the place
Maybe I am missing smth or is there a chiky way to do so?
This is the address I need to fill

This is what I can input in router page

 

[mmaaxx33]

I am using 3004.388.5 Merlin

 

[bbunge]

I am using 3004.388.5 Merlin

Then post your question to the Asuswrt-Merlin area of the forum.

 

[mmaaxx33]

Then post your question to the Asuswrt-Merlin area of the forum.

But I am not sure that it relates to the Merlin directly.
Will you be able to check the field length on the stock, please.
On the topic, it seems I can't move the tread. What is the general approach here?

 

[bbunge]

But I am not sure that it relates to the Merlin directly.
Will you be able to check the field length on the stock, please.
On the topic, it seems I can't move the tread. What is the general approach here?

Sorry, no because I do not use IPV6. My ISP only offers 6RD and that is slower than just using IPV4. The tunnel server is on the other side of the country.