As we've announced several times over the past few months, we no longer support DAO tokens. Our DAO refund feature is no longer working as all of the third party services, including our integration partner ShapeShift, no longer support the token.
The only way to extract your digital assets from your wallet is to find a service that still supports the DAO and allows you to import your private keys. Unfortunately, most exchanges and wallets have removed support already so you will have to conduct research on a service that will allow you to do this. Here is an article that might be useful.