Your battery is saving power,so get in there and turn off the restrictions in the Power Saving mode. I was worried too,I trust that you would figured it out.
+
+
=== Update (06/04/2016) ===
+
+
Your phone when to Power Saving mode, and that will restrict your lights, apps, etc. Go to your Power saving menu and toggle it off
Your battery is saving power,so get in there and turn off the restrictions in the Power Saving mode. I was worried too,I trust that you would figured it out.