To address the hidden course total, do you have any grade items hidden? If yes, there is a setting that hides totals if there is a hidden grade item. Check the Settings tab > Hide totals if they contain hidden items. Your screen shots look like the individual grade items may be hidden.
On a tangent, is there a reason that you are using Simple weighted for the sub-categories? I recommend using Sum of grades for the sub-categories so that if you add another item to either of the sub-categories, you don't have to manually update the sub-categories total.