When you run into a problem with a website, the first thing to do is to try Reloading the page. If that doesn't work, sometimes just restarting your computer will do the trick. If you are still having trouble, it can sometimes help to clear your browser cache, removing any copies of the webpage that your browser has stored in your computer's memory for quick access.
Here is how to clear your browser cache in Firefox (you will find similar options for Internet Explorer, Safari, and any other web browser, although the specific instructions will vary - see the comments section for this post where you will find a link to an article about clearing the Firefox cache on a Windows computer):
Go to the Firefox menu, and choose Preferences.
From Preferences, choose the Privacy option.
In the Private Data section, click on the Settings button.
This will allow you to choose exactly what you want to clear. To clear the saved copies of webpages in the cache, just choose cache. You also have the option to remove information about cookies, browsing history, etc.
When you are done, click OK. This will return you to the main Privacy screen, so that you can click on the Clear Now button in the Private Data section.
You be prompted to confirm your choice - and that's it! You can close the Preferences window now and continue browsing; there is no need to restart your browser.
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