Time stamp update

Hi, I would like to suggest you changing from onEdit to onChange and see what happens when you edit the checkboxes in Glide.

This thread says: " onEdit only works when you edit a cell (not when a row is added or when a note/comment is added) and onChange will capture that a change has occurred and trigger when appropriate."

As the Sheets may not have seen a Glide action as a “cell edit” action, onChange would suit better as it takes into account the value of the cell.