You will need your 12 word recovery phrase to import your wallet to the desktop wallet. You can download the desktop wallet at wallet.bitcoin.com or at github.com/bitcoin-portal/bitcoin-wallet-releases/releases/tag/5.13-RC4
1. Click the + button on the main wallets screen
2. Click Import wallet
3. Enter your 12 word recovery phrase, and select whether BCH/BTC
4. Select Import