Hiding Columns in Submissions

Thank you for the solution you sent to me with regard to hiding a column in submissions. I have tried to action it  but  when I have clicked on the down arrow associated with the column the box appears but fails to open up to reveal the options. I'n not sure if it is being caused by the fact that on the home screen where my forms are recorded the "To Read" indicator on one of the forms says that I have one entry to read for that form which I can clear but it keeps coming back - no other entries have been made. Sorry to be such a pain Roger

Please try clicking on the Mark All as Read option:

That should clear it. Let us know if that helps.