I think the pools may have shut down; the mining revenue wouldn't have been significant. You can easily mine solo if you like: https://github.com/projectwyvern/wyvern-solo-pool.

After block 315000, you'll be able to redeem UTXOs in your wallet for WYV ERC20 tokens at redeem.projectwyvern.com (currently deployed on Ethereum's Rinkeby testnet). Once an ERC20 token, Wyvern will be tradeable on any exchange or service which supports the ERC20 interface.