Problem logging into

I’m trying to log into the store so I can purchase some Photons. When I give it my credentials it says incorrect email or password, even though I’m using the same credentials that get me into community, console, build, and straight-up Is there a problem with the store login right now? I’ve bought through the store before, so I know I’ve logged in before. You haven’t changed something to require a different set of credentials to the store, have you?

(Seems like this would have fit best in the “hyper-generic” General category.)