Hello,
Thank you for the excellent question, I’m sorry your website isn’t updating as expected. The most common reason for this to occur is caching.
For example, if your hosting environment is using a Reverse-Proxy cache like NGINX, you may want to install the NGINX Helper Plugin so that your changes clear the NGINX cache automatically.
If you have a Page-Caching plugin such as W3 Total Cache, you may need to manually purge the cache.
Additionally, you may want to clear your browser cache as well.