I have an IQFeed account now, and added the extension, and configure it with my user/pw, but then nothing happens (like no test symbols work). Then I see "You must have an IQFeed account and their client software installed for this Data Source to function." What "client software"?? I can't find anything like that on iqfeed.net so far.
ps. IQFeed has historical data, but I don't see that being available as a QS price data provider. Am I missing something to use IQFeed as a source of historical data?