It sounds like child lock has been accidentally set.
Look at the facia of the appliance and you should either a padlock or a child's head between 2 buttons.
Press and hold the 2 buttons until the padlock symbol goes out.
You should then be able to use the machine again.
Check it out, get back to me if you need more help.
Thank you very much, that seems to have worked perfectly.
Thanks for letting me know.
Glad you got it sorted out and working again.
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Good luck with the appliance.