Can't upgrade from 7 to 8 Personal - fill-in fields not fillable

Here's the screen I see. The fields in "Create your Account" are not selectable. I'm assuming the warning in pink about enabling cookies and local storage are the cause of the problem. However, I have no idea how to do that in 1Password, and I can't tell which "browser" is being used to generate this form. Cookies are enabled in the default browser on the system (Safari), don't know about local storage status on Safari as I can't find anywhere in Safari settings that mentions it.