Use this guide to download Electrum wallet from https://electrum.org and verify the signature. Blockchain wallet make use of legacy addresses (Bitcoin addresses that start from 1). Open the electrum wallet, click on standard wallet, the click on 'i already have a seed', checked the BIP39 box, click on next and sellcet P2PKH (legacy) and click on next. Let you wallet sychronized with the blockchain, you should see your fund.