Migrating from PHPBB2

[fredilan]

Hi all,
I was able to import PHPBB2 Forums data to vBulletin 3.6.4 using impex. The only problem is when i access the forums page and click on the imported Threads, an error message appears:

admin, you do not have permission to access this page. This could be due to one of several reasons:

1. Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
2. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.

Hope you can assist me on this. Thanks!