Can't save adjusted sleep time in S-Health

[AC Question]

I have a Samsung 7s Edge, which I absolutely love! I am having an issue with the S-Health App. When I go into the sleep section and I try to adjust the time of sleep (like when I actually was awake) and hit save, nothing happens. Then I hit the arrow to go back and it tells me that the information wont be saved, to delete, cancel or save. I hit save, but again, nothing happens. What am I doing wrong?