If you notice that some of Divi Booster's settings are not being applied to your site, one possibility is that Divi Booster's CSS and JavaScript files aren't accessible from the browser. The files in question are located in your WordPress directory, at:...
troubleshooting
Solve WordPress Update Cannot be Installed because "we will be unable to copy some files"
When trying to update Divi Booster (or any other WordPress plugin, for that matter), you may receive a message indicating that WordPress can't copy some of the plugin's files. This is typically due to file settings blocking WordPress from reading / writing to the plugin directory. Learn how to correct the settings and get updates working again.