If you have a positive KNC balance but KyberDAO cannot find your balance even though your wallet is connected, please ensure that your network is set to Ethereum and that you have a positive ERC20 KNC token balance. The DAO is on the Ethereum network, so you will only be able to stake KNC that is on the Ethereum network.
If you have KNC tokens on other networks, these will first need to be bridged to Ethereum before they can be used to participate in KyberDAO.