Hi,
Yoast is outputting all the right data on the page: https://thenerdystudent.com/2019/02/keysmart-review/. We also ran a curl check and it shows 200. So Google is expected to find and crawl that page. See image: https://pasteboard.co/I0PIzfj.png
The page is also appearing on the sitemap here: https://thenerdystudent.com/post-sitemap.xml too.
We are not sure why Google is failing to make that URL appear in Google but Yoast is working as expected. We suggest the following:
1. We suggest having the right sitemap below in your robots.txt file. This guide explains how to edit the robots.txt:?https://kb.yoast.com/kb/how-to-edit-robots-txt-through-yoast-seo/.
Sitemap: https://thenerdystudent.com/sitemap_index.xml
2. Clear all your caching from your theme, plugin, server, CDN like CloudFlare or browser. If you are not sure how to clear caching from theme/plugin please speak to those authors. If you want to clear cache from the server, please speak to your host provider. To clear the cache from a browser use this guide:?https://kb.yoast.com/kb/how-to-clear-my-browsers-cache/.
3. Delete your sitemap in Google. Doing so will not hurt the SEO of the site. This guide explains more (scroll to the bottom):?https://support.google.com/webmasters/answer/183669?hl=en.
4. Submit the sitemaps again. This guide explains more:?https://kb.yoast.com/kb/submit-sitemap-search-engines/.
5. Monitor the results to see if more pages get indexed
