Hey, @Lialia0909 @kizter654
Want to let you know we're seeing some reports of account linking issues and our teams are investigating. What we still recommend you do is create a case at our Help site Help.EA.com so our staff can pull up your account to assist with this moving forward. Our forum staff are not able to make any account changes, thus we want to make sure we're pointing you in the right direction for help with this and provide updates here on the forums when we hear them.
Here is how to contact our Support team for help with account/Twitch linking:
EA Help on Twitter
https://twitter.com/EAHelp
Live-Support
https://help.ea.com/en/contact-us/