In somehow, after last update, access date to units stops working. Even that I set, date for units, it giving access to evething to all my students.
It not showing information: that this unit/course will be avaible in 2 days etc. too
Before everything worked well.
For unit start date, you need to make sure the course is set on Drip feed mode.
a. Edit the course
b. Check course settings
c. Make sure Drip feed is enabled and drip duration is entered (value does not matter because it is overwritten by unit start date).
Let me know if this does not help.