Can you peek over at the hidden columns on the right side of your sheet, @roger.chu91 and let us know if any columns are blank or show #NA?
Also, sometimes, when a sheet is dependent on another sheet (e.g. Retirement Planner references Cash Flow Forecast) and the “upstream” sheet is updated, the links within the “downstream” sheet (i.e. Retirement Planner) break. Can you try performing a restore on the Retirement Planner?