Cannot turn off scroll lock on Macbook Pro

Have read all of the discussions on this topic and tried every proposed resolution, - none work: Cannot enter data or move between cells in Excel for MAC.

- shift+fn+f12, plus every suggested combination of shift +/or fn +/or cmd + soft keys

- there is no keyboard/scroll icon anywhere in the Excel window

- checked fn box in system preferences for keyboard

- have no f14 key and no external keyboard

This just occurred, so I must have accidentally locked it via keystrokes, which implies there's a keystroke combo to undo it. I appreciate any help - thank you!