Cádomotus frames are typically low. If your boots have also a low mount blocks, you might experience the 2nd or center wheel of your setup to be blocked by the carbon shell of your boot. In this case you need these risers to lift your boot and have your wheels spinning free.
The sketch explain how to place the wedges in case of pronation.
A usefull article about how to use shims or off-set for speedskaters that pronate can be found here: VH speed skating