I have integrated AEM 6.5 and Target successfully through IMS and legacy Target cloud service. I created an activity on AEM and pushed it to Target. I am able to see the activity in AEM. When I open the page either in publish or in author with wcmmode disabled, I got the following error

Rendering mbox failed target-global-mbox : {status: "error", error: "unknown client code : <client-code>

For this I changed property "clientcode" from tenant id to client code in target configuration. After this I am getting following error:

"The default offer path was not found in the internal map for mbox target-global-mbox"

And the targeted content is hidden on the page. Even the default content is not shown. 

Can anyone help me? I must have missed something.