One of our employees has had signed in with her Google account on a tablet (SM-T285, organizational one, and I didn't know that). Now she isn't here and we don't have access to her. Because she had had set a screen lock (and also many other customizations), I preferred to do a factory reset to make it totally clean. Now I am stuck in initial setup and need that Google account. How can I bypass this? I have googled a lot, no luck.