It's normal wear and tear. Takara Beys with teeth tend to wear more than Hasbro ones, which use a sloped burst system. You'll have to get a new one
Sorry to say but now the layers are dead and now you have to use paper to make them a bit hard which is illegal . I too lost most of my beys due to this.
Good news will be that disk and driver are alive but your layer will be only for fun not for competitive purposes.