My freerider does not move well when used as a buggy board. Is there something wrong?

Not at all. It is highly likely that the rear wheel of your free rider is could still be in 'scooter' mode, which keeps it in a fixed position.

When using the free rider as a buggy board you can change the wheel to a full swivel castor. To do this you pull the wheel down, and turn it around. The following pages on our website may help to explain this:

http://mountainbuggy.com/en/free-rider-buggy-board-and-scooter#_instructions

http://mountainbuggy.com/en/free-rider-buggy-board-and-scooter#_gallery

Having the rear wheel on full swivel allows the free rider to turn easily with the buggy.