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What is this screen that says "Cox Production" that has appeared when I try to log in on my Fire HD 10? There is no information and no way around it. It won't accept my user name and password.
What app on the Fire HD 10 are you trying to login?
Have you previously and successfully logged into this app on the Fire HD 10?
"Cox Production" reads like a Products Team. As far as I'd presume, Cox wouldn't produce anything other than Help, Internet ads and YouTube videos. Perhaps something is trying to launch but your Fire is blocking it.
Yeah...we'd need a screenshot of the screen.