The affected items are not corrosion-resistant.
No remedy.
Purchase cutlery that is dishwasher-proof.
There are rust stains on cutlery.
No remedy.
Purchase cutlery that is dishwasher-proof.
Immediately after filling the salt container and each time you remove the salt container cap, run the [Rinse out salt] programme (depending on the model) without load items or another programme with a low temperature and without load items in the dishwasher to dissolve and remove any traces of salt from the wash cabinet.
Replace the cap, making sure that it screws back on correctly.