We made some recent improvements for KidzTalk tablet users, such as fixing problems with apostrophes in comments and issues getting the editor box to come up when you tap it. You should clear your browser cache and reload the page to get the updates. If you are using the App you can do this in Apps -> Safari -> Settings.
This was mostly impacting iPad users, but other devices may also benefit.
We really appreciate the feedback from everyone who was reporting the problem.