I wanted to use the mobile apps for some spreadsheet collaboration, specifically the use of drop-down lists for cells feature was my main goal. On the desktop spreadsheet editor I can make it work without any problem, after data validation and list creation the little icon for the drop-down menu appears on the selected cell, and I can see my list, can select anything. This feature is not working in the mobile apps though. On Android the drop-down menu icon appears next to the cell just like in the browser, but it isn’t clickable, no matter how far I’m zooming in. On the IOS app the icon isn’t visible at all. Is this because I’m not using the paid features?