Having an issue with youur JetPack for WordPress? Check them out here at jetpack.me: Known Issues.
This is a great plugin to test a new WP Theme without letting your site’s visitors see what you are currently testing. I find this a good alternative to XAMPP (unless you really want to test a new theme in your desktop or laptop). Try Theme Test Drive by Prelovac.com.https://www.prelovac.com/vladimir/wordpress-plugins/theme-test-drive
When admin bar is showing even when you are logged out, chances are you are using W3 Total Cache. All you need to do is to login in and clear the page cache and browser cache. At least, that is what i did following the thread here: Quick Fix When Seeing the Admin Bar Even When Loggout.
You can try to find the specific module and empty.
1. Make sure that you have your wp-footer.