Why aren't my changes showing up?
Sometimes you make a change, publish it, and you don't see it when you go to the site.
Or maybe your site was down, then you fixed it, but it's still down.
Before trying anything else, try clearing the cache. Caching is when your browser (and even Internet Service Provider) saves a version of your website in order to load it quicker next time.
Sometimes all you need to do is clear your cache to see the new changes that were made.
To learn how to clear your cache or delete data from specific websites only, do a search for "how to clear cache in Firefox" or whichever browser you use.