Re: Having trouble with site title
In Tiki 8.1, the site title and subtitle are displayed via a module, so you should check on tiki-admin_modules.php that the "logo" module doesn't have "group" specified as "registered", which would prevent anonymous users from seeing it.
If that is OK, it's possible that a session cookie could be blocking the visibility. You could try checking your site in another browser that hasn't been used in a while, or try clearing session-related cookies from your regular browser, using its cookie manager.
The migration of site title and subtitle to the admin modules page isn't complete, as of Tiki 8.1, so that isn't a factor yet.
-- Gary