99% of the time, this is due to the fact that your links were in the system before the 19th of February. We made some updates to our system on that date, so any links put into the system on or before the 19th of February 2016 must be re-entered.
If you are not getting hits, please head on over to http://www.247webhits.com/websites and click on the "Delete All Websites" button.
After doing that, please re-enter your URL(s) into the system.
If you are still not getting hits, please make sure you have sufficient amount of points in your account.