Customizer isn't Working
To make sure the settings are right to go to Settings > Reading > “Latest Posts”. If it was set to “static” then that is most likely the issue.
If not, then you would want to check for a plugin conflict.
If that still does not fix the issue, it could be on the hosting end.
You could try fixing your
Look for the following and then change the URL appropriately:
In the event your file looks like this, you would add the “www” to the URL. It would then look like “http://www.YourSite.com”