I have a less than one year old IPad 2. I just installed iOS7 and cannot use a stylus to go anywhere on the screen no matter what I M doing. It is also hard to use fingers to do anything. There is also a lag when I try to scroll up or down. Since my hands are arthritic I really need to be able to use the stylus. I wish I had never updated to iOS7. It is no better than what I had previously. HELP!