Hey there, @austinseo . Thanks for reaching out to the Shopify Community with your sitemap situation! It’s nice to meet you!
Thanks for providing all of the context you have here. I just have a few questions I’m hoping you can answer so I can dive in a bit deeper for you here:
- Can you provide a URL to your store for us?
- Do you currently have a storefront password page enabled for your shop?
The reason why I asked about the password page is because this password page will inhibit Google’s ability to crawl sites. I actually enabled this page for my own test store as it was appearing in Google’s rankings and I totally didn’t want people seeing my broken store. 
For your sitemap submission error, are you seeing any other information that may indicate a more specific error? Are you seeing any codes or anything? A screenshot of the error you’re getting would be helpful, just so we have a bit more of a clearer picture into that side of your question.
Get back to me when you can with the requested info! I’ll keep my eyes peeled for your reply.