Stuck viewing forum in mobile view

[canross]

@Spanners Any chance you're able to look into this?
So far I've tried on three separate PCs using Chrome, Edge, and firefox.
I've also tried on one android phone using chrome, and an iphone using safari.
For each of these I've wiped history, cookies, site data, cache, and site settings for each browser.
If I had to guess, it's an account setting that I can't access because I don't have a settings option in mobile.
Because I'm stuck in mobile I can't post photos, so I'm going to have to post links to the screenshots of what I'm seeing.

In all cases when I arrive at the home page when not signed in, I can see the full site, on PC’s android, and iphone:



When I sign in it switches to the mobile loading page, even when I’m on a PC:


If I go to the bottom of the page and click “Full Site”



I just get returned to the top of the Mobile site page



As an aside, in mobile I can’t access site settings, so if it’s an internal setting, there’s no way for me to get in there to undo it.


Also I can’t post photos in mobile mode, so there’s no way for me to comply with the forum rules requiring me to include photos when selling items.
Also any notifications I get just fail to load, so I have no idea who is tagging me in threads because I can’t follow the links to them.