The weekly recurring tasks feature that allows you to check multiple days of the week is not reacting correctly. It saves the check boxes for the days you select, but doesn’t show the tasks for each of those days.
Additionally, when you check the item done, it skips the other instances and goes straight to the next week.
So for now, there is now way to do variable day recurrance, i.e. every other day, or custom selection of days of the week, without creating a weekly instance of the same thing multiple times.
Hopefully this can be fixed in the future.
Thanks 
