Please PM access details to FTP, Admin CP and vBSEO CP. Since we are not able to reproduce it on our side we have to check it on our server.
Please undo your changes before you give us access details (we need to see the issue to diagnose it) - you can made copies of files to easily bring it back again.
As I wrote vBET 3.3.3 should parse langtitle globally, at this moment I'm not able to tell does it is some bug, conflict with other plugin, or wrong vBET update.