I have made multiple posts about this. I tried everything possible. Drop downs in spreadsheets on mobile access just do not work or display at all. I do not understand how such a critical error can seemingly go ignored and unaddressed for so long. It worked fine when it was Google Docs but when they moved it all to Drive all of a sudden this nightmare began. I have still no received any answers on this and it is royally screwing up an important set of forms our company used.