Can't login without a security key that I don't have

Having a problem with one of the CF sites I have access to. I can login fine, but all of a sudden it’s asking for a security key. But CloudFlare never issued one to me nor did I turn 2FA on.

So what do I do to get into my clients account? They don’t have a security key either.

This is regarding dash.cloudflare.com, correct? (not a site protected by Access)

Did it say it was emailing you a key?