Azure pfSense GUI only accessible via WAN IP

[mplantenberg]

Hello All,

I've seen this question before and it was not answered. Hopefully I can get a better response.
We have a pfSense Azure instance that my company has been using for 4 years. I set it up. It works great. The Web GUI on that first system and another afterwards auto-configured the WEB UI to the LAN interface.
Now, no matter what I do, the Web UI is bound to the WAN interface.. After creation, I create and install the second interface. If I switch the interfaces, I can no long reach pfSense at all. I mean it is a brick. Delete, rinse, repeat with various changes and it always ends up with the same issue....dead appliance!
I'm assuming that there is a config file somewhere that is not accessible through the GUI to change this, but I've not been able to find any info on it.

Is there a way to switch the WEB UI / Admin portal access from the WAN to the LAN?

Thanks!
Mark