SPA (Single Page Application) plugin can move between blog pages dynamically and without reloading the entire page.
In other words, the browser does not need to reload or refresh when switching between pages and can move between pages much faster.
If you use the auto ads feature on Google Adsense, this plugin only loads auto ads on the first page, and on the next page auto ads won't appear, this is because Google Adsense doesn't support SPA-based websites.
To work around this issue, you can manually apply ads in posts or use the static shortcodes {adsense:display} {adsense:multiplex}.
Adsense Plugin Guide
https://theme62.com/en/docs/adsense-plugin
You can also use the Insert to Post plugin to place an ad in the middle of the article, the ad still appears on the next page.
Insert to Post Plugin Guide
https://theme62.com/en/docs/insert-to-post-plugin