As quoted from the linked post.
It looks like you’re part of one of our experiments. The logged-in mobile web experience is currently unavailable for a portion of users. To access the site you can log on via desktop, the mobile apps, or wait for the experiment to conclude.
This is separate from the API issue. This will actually BLOCK you from even viewing reddit on your phone without using the official app.
Archive.org link in case the post is removed.
I want to leave Reddit completely so bad. They’re ruining such a good thing, I was a member for 13 years. I hope Lemmy kinda just naturally replaces it for me but I’m sure there’s some stuff that’s just the best to go to Reddit for, I hope that changes slowly and people start using Lemmy or something else. But hey im here and it feels pretty good. Feels kinda like when I found Reddit for the first time all those years ago. Hello everyone :)