If your docs open in “Protected View”, this is actually a web-enabled security feature on your browser and not a formatting issue. You can click the “Enable Editing” button towards the top/center of the spreadsheet, as shown below. This will put you in “Normal View” which also allows you to edit data, save it, or print it. You may need to maximize the spreadsheet for full screen viewing depending on your settings. If so, simply click the small box in the upper right corner of the spreadsheet to maximize or minimize.