Fighter Subclasses from TCE and XGE not available?

Hey all,

I'm making a fighter for my campaign rn, and I want to use the Psi Knight subclass. I bought Tasha's Cauldron of Everything and have used that content to make other characters (paladin) and it was fine.

However, when I go to make my Fighter, I only have access to Champion or Rune Knight, nothing else, despite all sources being selected in the toggle. 

Is this a site issue or a me issue? 

EDIT: I have access to rune knight, not eldritch as I originally said.

"Expanded rules" are checked off, yeah. All of the boxes are.

 I misspoke in my OG post. It's Champion and Rune Knighr, not Eldritch that I have access to. Everything else is missing from all my source books (2014 PHB, TCE, XGtE, Ebberon)

That did the trick!! Thank you!

You're a godsend! One Psi fighter coming up!