The last time I used the notebook with check boxes last week, I believe the command to uncheck all was back (unless I accidentally pulled up the old version). I'm not at the computer where I use it right now but I believe the command was back on the desktop version, but not the web or Android version--but I don't think the command was in all version in the past either. If not there, I think the best work around was to use the older version, which they did post for download.