How do I clean the front of a stainless steel dishwasher?

I would call the manufacturer of the machine and the magnetic cover company

Here's an article with tips. I use a microfiber cloth to clean my appliances. You might need to use a solution like "GooGone" or WD-40.

https://learn.compactappliance.com/clean-stainless-steel-appliances/

Pure stainless steel isn't magnetic. Manufacturers have added lesser metals to the stainless so people can use magnets, but causes it to rust. Unfortunately there's nothing to do to fix it. If still under warranty you may have a claim.

Mineral spirits or WD40 and a microfiber cloth.

Mix half mineral/baby oil, half isopropyl alcohol in a spray bottle. Shake up and spray lightly. Buff with microfiber cloth. (Hint) use same cloth next time for quick touch ups.

I’ve used WD40 for years with great results

I clean it with white vinegar and a microfiber cloth, then add a little olive oil to a cloth and buff it out. Keeps the streaks away.

Weiman Stainless Steel cleaner and polish, applied with their microfiber cloth. All my stainless looked terrible until I found this. I've used it once, months ago, and the stainless appliances still aren't showing marks. This stuff works.

The fact that a magnetic cover was able to stick to your stainless steel means it isn't pure stainless steel as magnets don't adhere to real stainkess steel. And those stains are likely rust spots coming through. This can happen because of everyday wear-and-tear and is especially common in humid areas. Nothing will remove them. If under warranty, you might have a claim but I fear using a magnetic cover likely voided it. Perhaps find a new magnetic cover?

Try Pledge, too....it removes goo sometimes, depending on what it is...

I have made a paste using barkeepers and cold water .The bar keepers i use is made for stainless steel,let it sit for 30 minutes. I always use microfiber cloths when cleaning stainless steel. I found a product at home depot to keep stainless steel shiny and helps with cleaning.

I can't tell what your stains are from. Here's what I do to get sticky food residue off stainless. Mix equal parts water, alcohol and vinegar. Add 3 drops dishsoap. Spray surface and wait one minute. Wipe down with cotton Terry cloth towel.

After this, use a stainless steel cleaner such as Weimans to restore shine.

I recently used Windex on my refrigerator for stains and finger marks. It worked well.

i use white vinegar and then rub it with olive or mineral oil

I know this might sound too simple but try a magic eraser, I've found that they clean almost everything,

Use furniture polish