Here's an example of importing bitcoin mnemonic:
1. Click on the switch button on the top of "Assets" page enter the "Manage wallets" page. then click the "+" button on the right of "Imported Wallet"
2. Next, choose the "Bitcoin Wallet" enter the "Import Bitcoin Wallet" page.
3. Select "mnemonic" and input your mnemonic(make sure here is a space between each word), then input the password, select the type of address, Segwit address or General address.
Note: The Segwit address starts with "3", and the General address starts with "1". As Segwit, click here for details.