# 2.1 Bind Account

To begin with Meta Defender's Option Trading on the Acala network, it's essential to bind both your Substrate and Ethereum accounts. This ensures smooth and secure trading operations.

**Key Points to Remember:**

* Your Ethereum and Substrate accounts should not be bound to any other accounts.
* Always have enough $ACA in your Substrate account to manage transaction fees.
* Users with existing accounts meeting the above criteria can proceed directly to bind your accounts. If not, you'll need to set up your Substrate and Ethereum accounts first.

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**Binding Your Accounts on Acala Mainnet:**

1. Go to "[Bind MetaMask](https://guide.acalaapps.wiki/general/address-binding)" on the Acala dApp.
2. Click "Connect to MetaMask" and choose the account you want to bind.
3. Repeat the procedure for your Substrate account.
4. Ensure you're linking the right accounts - this decision is final.
5. Click on "Sign."

<figure><img src="https://246931588-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3GSoC3xPnKl9BK9S330N%2Fuploads%2FnuPjHNcuGuWiwkqVvPtk%2Fa.png?alt=media&#x26;token=ae41b71b-36a6-4ce6-8ef9-5f95396b4fb9" alt=""><figcaption></figcaption></figure>

If you are having trouble connecting your MetMask, you can either add it via [Acala](https://chainlist.org/chain/787) on ChainList, or manually add the Acala network by opening your MetaMask wallet and going to Settings-> Networks -> Add Networks and entering the following information:

Network Name: Acala

New RPC URLhttps\://eth-rpc-acala.aca-api.network/

Chain ID: 787

Currency Symbol: ACA

Block Explorer URLhttps\://blockscout.acala.network/


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