If you have previously used our Facebook login, you will need to dis-associate and re-associate your Facebook account. To do this follow the following steps (Using default skin - Villain):
Step 1: Click on the dropdown arrow next to your username at the top left.
Step 2: Click on Account Settings under the Settings section.
Step 3: Click on Facebook at the bottom.
Step 4: Click on Disassociate Facebook to the right to un-link your Facebook account.
Step 5: Click on the Sign In with Facebook button to re-link your Facebook account.