Indexing issues and can't get sitemap to Google Search Console

Downhilltrucker

I recently switched my website to a wordpress site from smugmug. I'm still using smugmug for my galleries... both for client delivery and as example galleries linked from the wordpress site. I want to re index these pages with search console, but my sitemap keeps saying "couldn't fetch" when i load it. I'm loading zachrohe.smugmug.com/sitemap-index.xml with no luck.

Any help is appreciated. It's been a disaster since I switched over and I think the indexing is part of the problem.