Its not letting mw sign in with my user ID and store number. Is my User ID my email that I used on my applicant form?

Hi, I'm a new hire at Walmart, and I'm trying to get into the Me@Walmart app, but it's flat-out just not working.

I went through the "Candidate" sign-in and used my email and password from my application (like the instructions I got said), but the "Sign In" button isn't doing anything (and, after checking, doesn't seem to actually have any direction? like, no link attached?) If I close out of the window and hit the "Candidate" button again, it just opens a black screen (probably would be white in light mode, idk). My dad figured out that if I open the regular sign in, plug in my email and the store number, it fixes the page that opens in the "Candidate" button, but the "Sign In" button still doesn't do anything.

I figured I'd ask here before I go calling the helpline, since they'll probably stick me on hold for an hour.