Huge problem! My Nexus 7 (2012) has been working flawlessly. When I turned it on this morning, its language had changed to what I think was Polish. By looking up language change directions on my laptop, I got the Nexus back to English, but now the only user account is under the name Weather Enlish. I had downloaded only two apps (Kindle and a financial service), and both have disappeared. Can someone either help get my user account back or explain what happened?