Can't access the moderation panel?
This is happening because the account you're logged into is not listed as a moderator/admin for the forum installed on your site. You or your company may have multiple accounts, or the forum's primary account may belong to another person.
Check any of your other email addresses to verify you don't have another Disqus account.
If it's a multi-user site, check with the others who have access to the forum to add you as a moderator.
Register a forum if you haven't yet and update your site with your new shortname.