Need some help cleaning the proof we use dishwasher

I ended up with a dishwasher that has touch controls ( pandemic supply constraint). For the last few months I tried to clean the fingertip marks and the splash marks on the touch surface to no avail.

In case the lighting was unhelpful, the silver plastic (?) shows a matte stain on the buttons we most press — power, start, turn off high drying heat. Plus some droplet-like stains. How does one eliminate these stains? I tried dish soap, dawn, alcohol. Nada. (There is a lighting artifact on pic 2, start button is not faded in reality)