Like all sites, this one has its ups and downs which really can't be explained or predicted. Don't worry, you will have some great days too. It isn't always bad.
But you must put in the time, day or night, refreshing the page regularly, and make sure that you are doing all options - Facebook, Twitter, Google+, Youtube and the traffic ads.
Good days bring in a lot of money, and even the bad days are generally much better earners than typical paid-to-click sites.
Hang in there, it must get better eventually.