OK, thanks for that.
There's something in the pump jamming it.
Unplug the appliance.
Pull it out and have someone hold the machine tilted rearward while you work on it.
Put some towels down.
On the underside you'll the clips coming through the base that hold the filter housing in place.
Squeeze the clips and push them up into the base a little.
Reach in and slide the drain pump out sideways, taking care to catch the O ring seal if it comes out.
Take the pump out, clean out any debris.
fit the O ring to the pump and refit it.
(It goes into slots in the filter housing).
Side it fully into the housing and then push the housing back onto the base until the clips come through.
Stand the machine up.
Plug it in and try it again.
If you can't manage from underneath.
Put some towels down and very carefully lie the machine onto it's left side (dispenser side down).
Let me know how it goes.#