I broke it

I know the title is very vague, but I know there are many broken things on my site. Anyways…

I have a website at [domain.com] in dire need of an update, so to run a “beta” version of the new website, I want to have WordPress running on nexhome.[domain.com]. This is done via an Argo tunnel on Cloudflare. My argo tunnel is configured so that it loads whatever it finds on WordPress’ port on nexhome.[domain.com]. I have a nextcloud installation with no conflicting ports that’s been working for the past few months, so Argo should be set up correctly.

For some reason, only the HTML is going over the Argo tunnel. Whenever I try to load nexhome.[domain.com], I get the HTML, but no styling or images. I changed the site address on the general page of “Settings” in WP Admin to nexhome, and yay for me, I bricked it. I had to add the local IP and port to wp-config.php.

The only other topic facing this issue is this, but I’m not sure how to implement that solution.

So here’s what I need fixed:
– Load entire site over nexhome.[domain.com]
– Delete whatever is causing the WordPress URL to go back to nexhome so that I can use the admin panel rather than having to edit wp-config.php

Note: This is running on a webserver at my home running Ubuntu 20.04. I have to use Argo for security reasons.

Thank you!