Hi,
Make sure you are using the correct links with proper tags. It should be like below for the respective links:
View Online :
http:http://s[SiteID].t.eloqua.com/e/es?s=<eloqua type='emailfield' syntax='siteid' />&e=<eloqua type='emailfield' syntax='elqemailsaveguid' />&elq=<eloqua type='emailfield' syntax='recipientid' />
Susbscription Management Center :
http://s[SiteID].t.eloqua.com/e/sl?s=<eloqua type='emailfield' syntax='siteid'/>&elq=<eloqua type='emailfield'
syntax='recipientid'/>
Unsubscribe Link :
http://s[SiteID].t.eloqua.com/e/u?s=<eloqua type='emailfield' syntax='siteid'/>&elq=<eloqua type='emailfield' syntax='recipientid'/>
And make sure you while you are sending the email through eloqua each query string parameter is able to capture the values by sending a test email.
Ankit