I start TopSuDoKu but can figure out how to punch numbers in, what is going on?
First, relax, its not you, its us. At some point, we had many requests from users to add a functionality called highlighting. This allows to highlight squares, that is to mark them for whatever reason. Toggling in and out of highlight mode is done by tapping the highlighter button (to the left of the board). Many first time users, tap the buttons randomly and accidently enter the highlight mode, hence when you then tap a board square it is highlighted instead of the standard functionality that opens the number chooser form that allows punching in numbers. So, in short, just toggle the highlight mode making it disable and hit any square to get the number popup to show.
