'Redirecting you back to the application' but it never redirects


I use Social Engine 4.8.6 and I’m trying to integrate my twitter app

When I click the signin with twitter button on my site everything seems to be going okay until it says

‘Redirecting you back to the application. This may take a few moments.’

But it takes forever. It never redirects.

On the social engine site it says to use http://domain.com/user/auth/twitter for callback url so that’s what I did

In these forum someone who appeared to have the same problem seems to have solved it by putting www before in the url (callback). I tried that but it didn’t help.

Can someone please tell me what to do?