Authentication Issue - Remote Access AEM Assets instance from AEM Sites

Hi All,

Following the config issue defined at

I have the below new issue -

I have access to both remote DAM instance and Sites instance independently.

We have deployed the OSGi config for NextGenDynamicMediaConfigImpl successfully on Sites instance.
We are seeing the option on Image (v3) component to Pick Remote or Local repo. 
 

On selecting “Remote” we get the pop-up to login which automatically disappears (Assuming it picks up SSO credentials)
 

Then the popup gets replaced by the Coral UI Asset Selector Tab with message “Waiting for user to authenticate...”

Any idea what we are missing here now?

​@giuseppebaglio I would highly appreciate your opinion on this problem. 

Thanks in advance,

Nagesh