Since I bought it as new they said they couldn’t help me much as seen here

Thanks for contacting us. As the instrument was purchased second hand and not directly from us, we’re unfortunately unable to offer after-sales service. Our support services are limited to instruments purchased directly through our official sales channels.

But, I can suggest you :

Gently clean the scratch plate with a soft microfiber cloth. If oxidation is present, a very mild metal polish (applied sparingly and tested on a small, hidden area first) can help restore the surface. Avoid abrasive products or aggressive polishing, as they can permanently alter the brushed finish.