Ok so you have temporarily cleared your browser settings right? If you haven't then click the link and try that first - its quicker, easier and if that doesn't work the following advice won't help.
Warning: permanently clearing your browser settings will mean that other websites that you visit will be affected. For example you will have to sign into Facebook and Twitter again!
As each browser is different the instructions are different. We could copy them out for each different one - but that would be cheating (and a lot of reading for you) so instead click the browser name below to be redirected to the relevant instructions.