Remove the tray and clean inside
The dispenser may get clogged up so its a good idea to keep it clean. remove the soap drawer by opening it fully then pull it out - a little bit of force may be needed when pulling it out. Once it is out look into the compartment and you will see at the top lots of holes. It looks like a shower head or a cooking sieve! Spray some kitchen or bathroom cleaner into the top and sides of the dispenser body and using a cloth clean out any excess soap or mould growth. Using an anti bac spray is very good as it will kill bacteria and prevent the build up of mould. Keeping the holes in the dispenser top clean will ensure the soap and fabric conditioner flush away.
Take the soap drawer to your sink and remove the blue syphon cover. Give this and all of the compartments of the drawer a thorough clean with warm water and a soft cloth. Turn the drawer over and make sure the drainage hole for the fabric compartment is clean and not blocked up.