Advertising > Manage ads page vanished. Please help.

[Lynne]

I would check your error_logs (if you don't know where they are, ask your host) first to see if there is something there at the time that you try to access that page.

I'd also ask your host if they have changed anything on the server around the time this problem occurred.

Lastly, here is a page from the manual about troubleshooting blank or 'white' pages and you should go through the full list if neither of the suggestions above helped: https://www.vbulletin.com/docs/html/blank_pages