Please upgrade to 2.2 here.
The 2.0 and 2.1 branches are no longer being updated.
A number of small questions that should be easy to answer...
-Users on my site can change their username. How can I have Vanilla automatically recognize that a user has changed their user or email based on the proxy, so that the forums don't have their user and email out of date?
-Can I remove users' ability to change their email and password? Changing these in vanilla would be pointless because they need to change in the actual website database to be effective.