If a reflective sticker is no longer adhering to a cardboard piece on the Toy-Con, it is recommended to use double-sided tape or glue to adhere the sticker to the cardboard again. Do not use clear, adhesive tape over the reflective stickers, as this will likely affect the way the light reflects back to the IR motion camera.
If the reflective stickers are damaged and cannot be used, you can replace them with pieces of commercially available reflective tape. Do not replace reflective stickers with materials such as clear plastic tape or tinfoil, as this will likely affect the way the light reflects back to the IR motion camera.
Otherwise, click here for replacement information.
If a grommet was placed incorrectly on the cardboard, you can remove it using a coin or other small flat object. Gently insert the coin in between the cardboard and the grommet ring to loosen it. Keep in mind that if a grommet was placed backwards, it will not affect the Toy-Con performance.