Thats great, thanks
Over time these do get stiff and can fail to open correctly.
The answer is to replace the dispenser.
Unfortunately, being Neff, the part is not cheap, but certainly a lot cheaper than a new machine.
Please see here
for the part, just click the word in blue.
There is a video at the bottom of the page which shows you how to do the job. Its not exactly the same as yours, but the principle is the same.
If you need more help, please just ask me.
In the meantime,
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