How to clear your cache in Safari
If you are experiencing problems displaying WordPress.com pages, clearing the browser cache is a good first step to try to resolve the issue.
The steps below are for Safari version 6 through 8.
Basic Method for versions 6 through 8
Step 1: From the Safari menu, choose Reset Safari.
Step 2: Make sure Clear History and Remove All Website Data are checked, then hit Reset.
Safari 9 or still having problems with 8 or below.
Try these advanced steps for clearing your cache.
Step 1: First click on Safari then click Preferences.
Step 2: Click on the Advanced tab.
Step 3 : Check the box next to Show Develop menu in menu bar.
Step 4 : From the Develop drop down, select Empty Caches.
Step 5: Click the Reload Current Page icon.