OMG. DUH. I figured out my problem. Because my site is under development, I had the site password protected. Cookies & browser settings were handling the login for me, so I’d totally forgotten that nothing from the outside could get in. Now all I have to do is get medical treatment for the giant knot that formed on my head from smacking it against the wall for 2 days trying to figure this out. Sheesh. I just hope somebody else who’s having the same problem will see this and save themselves similar injury.