I use my iPad when traveling, and recently noticed some problems when I am signing up or in to a website. So if the site just won't let you in, don't use auto fill. Enter data manually, or cut then paste data back In. I was renting a car from Hertz for the first time, and it would not let me sign up to be a Hertz Gold member. I grew very frustrated until I remembered that my library web site won't sign me in when my library # is automatically shown, I have to cut then paste the number. Ah, little glitches! Hope this saves someone else some time.