Bosch Maxx WFL 2450 Drain Pump Cap Removal

Hi again chaps,
January is obviously not a good month for the Bosch appliances in my household, last week it was the element on the tumble dryer & now it is the washing machine 🙁
Basically the machine didn’t empty itself fully last night & I am guessing that the pump needs cleaning but I cannot seem to be able to remove the pump cap. It will turn anticlockwise from 12 o’clock to approx 10 o’clock but I am guessing that it needs to go further than this in order to be removed, but as it is only made of plastic I don’t want to use too much force in case it breaks.
So the question really is has anybody got any tips/advice as to how to remove this cap without breaking it 😕

Many thanks