Need help picking a motherboard and CPU cooler

Hey everyone!

So I started picking up parts for a new build and grabbed a used ASUS ROG Strix X570-E on the used market. Big problem though—it showed up without the CPU backplate, so now I'm totally stuck and can't even mount my Noctua NH-D14. I've been hunting everywhere in the US to find a replacement backplate, checked local shops and even Craigslist, but absolutely nothing. I did find one on eBay, but shipping is gonna take like a month to get to me. Does anyone know where else I can look? It’s literally the only thing standing between me and actually finishing this build.

Apparently, if you picked up a cooler after 2019, this was supposed to come included:

https://noctua.at/en/nh-d14

If you didn't get that, I guess you just need the mounting kit:

https://noctua.at/en/nm-am4-mounting-kit

Looks like it's available at Micro Center and even on an iPhone site:

https://www.nabava.net/search.php?q=nm-am4&cod=&cdo=