When you see an old page of any website it is time to delete your cache!
Search 'how to delete cache' in your browser.
Periodically it is better to clear the browsing history and cache.
When you browse the internet, the pages are saved by your browser. This is so that next time you visit the same site, everything loads quickly. In case the site has done changes, you will not be able to see them.
In this case you can use F5 to refresh. Or use Ctrl and F5 to force a refresh. Should these fail then clear your browsing history and cache (See above).