Hi.
Regarding account requests and the test wiki generally: unless there's a
_really_ good reason, wikis should not restrict account creation and then
rely on a public mailing list in order to request an account. It looks
like the use of this extension is already tied to a specific MediaWiki
user group, so I can't see any reason to restrict account creation on this
test wiki. Setting up a requests page on this test wiki would be a much
better approach, in my opinion.
MZMcBride