Dishwasher & white spots

[Jadefeather7]

My glasses are suddenly covered in white spots and I’m not sure why.

I’ve done a clean with a dishwasher cleaning product but no luck.

Any suggestions?

Try topping up the dishwasher salt compartment. Mine is at the bottom of the dishwasher and I have to remove the racks to get to it. There is a big knob (!) you remove in order to fill it. Dishwashers are often provided with a funnel to help.