Some people may be struggling with the continuous “processing download request” page when they are trying to download. This occurs because mediafire is prohibiting some countries from downloading at a certain time. It only happens for around 3 or more hours so either you can wait it out or:
If you are using Internet Explorer, go to Tools -> Internet Options -> Delete… -> select only Cookies -> Delete
If you are using Firefox, go to Tools -> Options -> Privacy tab -> Show cookies -> Scroll down and look for mediafire cookies folder and delete it
This should solve the problem, now download away.