My IPad Mini 4 will not turn off. I do have a smart case, but my IPad refuses to recognize that and will not give the lock/unblock button that some people have suggested using. No matter how many times I restart and reset, it will not recognize my Smart Cover. Yes, my smart is the right kind, I’ve checked. I’ve never had this problem before until I got my screen replaced and the tech guy messed around with my settings. In a vain attempt to reset them, I reset ALL the settings…and in doing so I lost my connection to the Smart Cover. How can I get it back?? Please help!!!