In main web.config I checked and I see that
What else can I check?
Edit: Attempted to upgrade another site, same problem.
Attempted to change YAF.BaseURLMask and it is clearly ignored. I tried to just change to value \, same behavior.
Is there anywhere I can force my site address, as it appears that DNN YAF module is ignoring web.config
What you need to check in your case is the url (Portal Alias) for your portal. In DNN 7 it is under Host -> Site Management
Thank you very much for your help!