Hello. My name is***** can help you with your question.
The way flex to works is that in order for a in app to be supported by it, it requires that someone has made a patch for that app. If no patch exists for the app, then you either have to create it yourself, or you cannot use that app with flex 2. There is a community for these patches – members of the community are those that use flex to and create patches for it. Then they share it with the rest of the community. Here is a link to that site.
That is actually the Reddit page for the software. But that is where you can request help with writing patches or having patches written for apps that you need.