For correct work of application:
1) In “Settings ⟶ Power management” turn OFF “STAMINA mode”, “UItra STAMINA mode” and “Low-battery mode”.
Screenshots
2) In “Settings ⟶ Battery usage ⟶ ⋮ ⟶ Battery saver” turn OFF.
Sony Android 5
For correct work of application:
1) In “Settings ⟶ Power management” turn OFF “STAMINA mode”, “UItra STAMINA mode” and “Low-battery mode”.
Screenshots
2) In “Settings ⟶ Battery usage ⟶ ⋮ ⟶ Battery saver” turn OFF.