[EHaskins]

First you need to set EasyC to FRC mode. You can do this in options>Robot Controller Setup.

Many of the functions will change after you change controller types. Explore the environment after you change the controller.

I have never tried the online windows, so I don't know.

The converter will work fine.

EDIT: Just to be clear, if a function appear while in FRC mode, it will work.