Click on the Epic button on the right hand side of the browser just next to the minimize button.
Then
Click Options ---> Click on the Privacy Tab
In the 'History' Field.
Epic will : Click on ' Use Custom Settings for History '
Check if the settings are as per the following image (especially check if there is a tick besides 'Accept cookies from sites'. Click on the 'Exceptions' button to check if you have added any site to your block list by mistake, if so then just remove it from the Exception List [unless the site is untrusted]):
Then Click OK. Close the browser and restart it and I think your problem should be solved. :)