Washing powder still within Hotpoint Electronic 1000 deluex after clean? whats up with that? how do i fix it? nearby are two...

whats up with that? how do i fix it? nearby are two compartments in the drawer. small on the feel, big on the right, but its never used, my clothes dont come out cleaned therefore, which compartement can i use, and how if at adjectives can i fix this? any help is much appreciated, thank you.