Can't enable GUI on WAN

[Dante4]

Greetings,

My need in GUI on WAN is because behind opnsense will be closed network that only have console machines without any GUI or browser.

So I have tried to do the same as it was on PFsense - adding rule:
https://i.imgur.com/iZdR2b7.png

Action - pass
Interface - WAN
Direction - IN
Protocol - ANY
Source - ANY
Destination - WAN address
Destination Port Range - ANY

In Generic Configuration I have disabled Block private networks and Block bogon networks


I have also enabled "Disable administration anti-lockout rule"



I have GUI listen interfaces All


And it doesn't work. And I don't understand why.

The moment when I assign LAN interface -
https://i.imgur.com/fRFFbJt.png - PRE Lan assignment
https://i.imgur.com/TLbwvWk.png - AFTER Lan assignment