To link a Twitch account to an EA account, follow these steps:

1. Ensure you have active accounts on both EA and Twitch and access to their associated emails.
2. Log in to your EA account on the official EA website.
3. Go to your EA Account settings by clicking on your profile icon, then select "Connected Accounts."
4. Find Twitch in the list of services and click "Continue."
5. You will be redirected to Twitch to log in (if not already logged in) and authorize EA to access your Twitch account.
6. Confirm the authorization by clicking "Authorize."
7. After authorization, click "Link Accounts" to complete the connection.
8. You should see Twitch listed as a connected account in your EA settings.

Once linked, you can earn in-game rewards from Twitch Drops by watching specific Twitch streams associated with EA games.