This is a problem that occurs once a while in Excel: Some objects are not showing. Most often, images or charts are not showing. Here are the possible reasons if charts, objects or images are missing and how to get them back!
Buttons For Inserting Images Or Charts In Excel Greyed Out?
You want to add a charts, image or drawing to your Excel workbook, but the buttons are greyed out like in the screenshot below? There might be a simple solution to solve this.