My dishwasher has suddenly stopped working. The display which shows programme number and time is blurry and doesn’t show full numbers. I can only press on once and then button stops working, same with the programme button press twice and it won’t go past programme 2. If I close it it doesn’t start a cycle. The salt and rinse aid symbol has come on now and then since problem started yesterday but go off almost immediately. And surely that wouldn’t account for the display looking dodgy and buttons not working. any advice please?